[enhancement]: fix typing of untyped-defs

[aciba90]

Enhancement

In https://github.com/canonical/cloud-init/pull/5409 we enabled the check_untyped_defs mypy lint to not include more type issues and disabled modules not passing the check. Fix them all!

Disabled modules

• [ ] cloudinit.analyze
• [ ] cloudinit.analyze.dump
• [ ] cloudinit.analyze.show
• [ ] cloudinit.cmd.devel.hotplug_hook
• [ ] cloudinit.cmd.devel.make_mime
• [ ] cloudinit.cmd.devel.net_convert
• [ ] cloudinit.cmd.main
• [ ] cloudinit.config.cc_apt_configure
• [ ] cloudinit.config.cc_ca_certs
• [ ] cloudinit.config.cc_growpart
• [ ] cloudinit.config.cc_ntp
• [ ] cloudinit.config.cc_power_state_change
• [ ] cloudinit.config.cc_rsyslog
• [ ] cloudinit.config.cc_ubuntu_pro
• [ ] cloudinit.config.modules
• [ ] cloudinit.config.schema
• [ ] cloudinit.distros
• [ ] cloudinit.distros.alpine
• [ ] cloudinit.distros.azurelinux
• [ ] cloudinit.distros.bsd
• [ ] cloudinit.distros.opensuse
• [ ] cloudinit.distros.parsers.hostname
• [ ] cloudinit.distros.parsers.hosts
• [ ] cloudinit.distros.parsers.resolv_conf
• [ ] cloudinit.distros.ubuntu
• [ ] cloudinit.distros.ug_util
• [ ] cloudinit.helpers
• [ ] cloudinit.log
• [ ] cloudinit.mergers
• [ ] cloudinit.net
• [ ] cloudinit.net.cmdline
• [ ] cloudinit.net.dhcp
• [ ] cloudinit.net.eni
• [ ] cloudinit.net.ephemeral
• [ ] cloudinit.net.freebsd
• [ ] cloudinit.net.netbsd
• [ ] cloudinit.net.netplan
• [ ] cloudinit.net.network_manager
• [ ] cloudinit.net.network_state
• [ ] cloudinit.net.networkd
• [ ] cloudinit.net.sysconfig
• [ ] cloudinit.netinfo
• [ ] cloudinit.reporting.handlers
• [ ] cloudinit.sources.DataSourceAzure
• [ ] cloudinit.sources.DataSourceBigstep
• [ ] cloudinit.sources.DataSourceCloudSigma
• [ ] cloudinit.sources.DataSourceCloudStack
• [ ] cloudinit.sources.DataSourceConfigDrive
• [ ] cloudinit.sources.DataSourceDigitalOcean
• [ ] cloudinit.sources.DataSourceEc2
• [ ] cloudinit.sources.DataSourceExoscale
• [ ] cloudinit.sources.DataSourceGCE
• [ ] cloudinit.sources.DataSourceHetzner
• [ ] cloudinit.sources.DataSourceIBMCloud
• [ ] cloudinit.sources.DataSourceMAAS
• [ ] cloudinit.sources.DataSourceNoCloud
• [ ] cloudinit.sources.DataSourceOVF
• [ ] cloudinit.sources.DataSourceOpenNebula
• [ ] cloudinit.sources.DataSourceOpenStack
• [ ] cloudinit.sources.DataSourceOracle
• [ ] cloudinit.sources.DataSourceRbxCloud
• [ ] cloudinit.sources.DataSourceScaleway
• [ ] cloudinit.sources.DataSourceSmartOS
• [ ] cloudinit.sources.DataSourceVMware
• [ ] cloudinit.sources
• [ ] cloudinit.sources.helpers.azure
• [ ] cloudinit.sources.helpers.ec2
• [ ] cloudinit.sources.helpers.netlink
• [ ] cloudinit.sources.helpers.openstack
• [ ] cloudinit.sources.helpers.vmware.imc.config_file
• [ ] cloudinit.sources.helpers.vmware.imc.config_nic
• [ ] cloudinit.sources.helpers.vultr
• [ ] cloudinit.ssh_util
• [ ] cloudinit.stages
• [ ] cloudinit.temp_utils
• [ ] cloudinit.templater
• [ ] cloudinit.user_data
• [ ] cloudinit.util
• [ ] tests.integration_tests.instances
• [ ] tests.unittests.analyze.test_show
• [ ] tests.unittests.cmd.devel.test_hotplug_hook
• [ ] tests.unittests.cmd.devel.test_render
• [ ] tests.unittests.cmd.test_clean
• [ ] tests.unittests.cmd.test_query
• [ ] tests.unittests.cmd.test_status
• [ ] tests.unittests.config.test_apt_configure_sources_list_v1
• [ ] tests.unittests.config.test_apt_configure_sources_list_v3
• [ ] tests.unittests.config.test_apt_source_v1
• [ ] tests.unittests.config.test_apt_source_v3
• [ ] tests.unittests.config.test_cc_ansible
• [ ] tests.unittests.config.test_cc_apk_configure
• [ ] tests.unittests.config.test_cc_apt_pipelining
• [ ] tests.unittests.config.test_cc_bootcmd
• [ ] tests.unittests.config.test_cc_ca_certs
• [ ] tests.unittests.config.test_cc_chef
• [ ] tests.unittests.config.test_cc_disable_ec2_metadata
• [ ] tests.unittests.config.test_cc_final_message
• [ ] tests.unittests.config.test_cc_growpart
• [ ] tests.unittests.config.test_cc_grub_dpkg
• [ ] tests.unittests.config.test_cc_install_hotplug
• [ ] tests.unittests.config.test_cc_keys_to_console
• [ ] tests.unittests.config.test_cc_landscape
• [ ] tests.unittests.config.test_cc_locale
• [ ] tests.unittests.config.test_cc_mcollective
• [ ] tests.unittests.config.test_cc_mounts
• [ ] tests.unittests.config.test_cc_ntp
• [ ] tests.unittests.config.test_cc_phone_home
• [ ] tests.unittests.config.test_cc_power_state_change
• [ ] tests.unittests.config.test_cc_puppet
• [ ] tests.unittests.config.test_cc_resizefs
• [ ] tests.unittests.config.test_cc_resolv_conf
• [ ] tests.unittests.config.test_cc_rh_subscription
• [ ] tests.unittests.config.test_cc_rsyslog
• [ ] tests.unittests.config.test_cc_runcmd
• [ ] tests.unittests.config.test_cc_set_hostname
• [ ] tests.unittests.config.test_cc_snap
• [ ] tests.unittests.config.test_cc_ssh
• [ ] tests.unittests.config.test_cc_timezone
• [ ] tests.unittests.config.test_cc_ubuntu_autoinstall
• [ ] tests.unittests.config.test_cc_ubuntu_drivers
• [ ] tests.unittests.config.test_cc_ubuntu_pro
• [ ] tests.unittests.config.test_cc_update_etc_hosts
• [ ] tests.unittests.config.test_cc_users_groups
• [ ] tests.unittests.config.test_cc_wireguard
• [ ] tests.unittests.config.test_cc_yum_add_repo
• [ ] tests.unittests.config.test_cc_zypper_add_repo
• [ ] tests.unittests.config.test_modules
• [ ] tests.unittests.config.test_schema
• [ ] tests.unittests.conftest
• [ ] tests.unittests.distros.test_alpine
• [ ] tests.unittests.distros.test_hosts
• [ ] tests.unittests.distros.test_ifconfig
• [ ] tests.unittests.distros.test_netbsd
• [ ] tests.unittests.distros.test_netconfig
• [ ] tests.unittests.distros.test_opensuse
• [ ] tests.unittests.distros.test_user_data_normalize
• [ ] tests.unittests.helpers
• [ ] tests.unittests.net.test_dhcp
• [ ] tests.unittests.net.test_init
• [ ] tests.unittests.net.test_network_state
• [ ] tests.unittests.net.test_networkd
• [ ] tests.unittests.runs.test_merge_run
• [ ] tests.unittests.runs.test_simple_run
• [ ] tests.unittests.sources.azure.test_errors
• [ ] tests.unittests.sources.azure.test_imds
• [ ] tests.unittests.sources.helpers.test_openstack
• [ ] tests.unittests.sources.test_aliyun
• [ ] tests.unittests.sources.test_altcloud
• [ ] tests.unittests.sources.test_azure
• [ ] tests.unittests.sources.test_azure_helper
• [ ] tests.unittests.sources.test_cloudsigma
• [ ] tests.unittests.sources.test_common
• [ ] tests.unittests.sources.test_configdrive
• [ ] tests.unittests.sources.test_digitalocean
• [ ] tests.unittests.sources.test_ec2
• [ ] tests.unittests.sources.test_exoscale
• [ ] tests.unittests.sources.test_gce
• [ ] tests.unittests.sources.test_init
• [ ] tests.unittests.sources.test_lxd
• [ ] tests.unittests.sources.test_maas
• [ ] tests.unittests.sources.test_nocloud
• [ ] tests.unittests.sources.test_opennebula
• [ ] tests.unittests.sources.test_openstack
• [ ] tests.unittests.sources.test_oracle
• [ ] tests.unittests.sources.test_ovf
• [ ] tests.unittests.sources.test_rbx
• [ ] tests.unittests.sources.test_scaleway
• [ ] tests.unittests.sources.test_smartos
• [ ] tests.unittests.sources.test_upcloud
• [ ] tests.unittests.sources.test_vultr
• [ ] tests.unittests.sources.test_wsl
• [ ] tests.unittests.sources.vmware.test_vmware_config_file
• [ ] tests.unittests.testinit
• [ ] tests.unittests.test_apport
• [ ] tests.unittests.test_builtin_handlers
• [ ] tests.unittests.test_cli
• [ ] tests.unittests.test_conftest
• [ ] tests.unittests.test_data
• [ ] tests.unittests.test_ds_identify
• [ ] tests.unittests.test_helpers
• [ ] tests.unittests.test_log
• [ ] tests.unittests.test_merging
• [ ] tests.unittests.test_net
• [ ] tests.unittests.test_net_activators
• [ ] tests.unittests.test_ssh_util
• [ ] tests.unittests.test_stages
• [ ] tests.unittests.test_subp
• [ ] tests.unittests.test_templating
• [ ] tests.unittests.test_upgrade
• [ ] tests.unittests.test_url_helper
• [ ] tests.unittests.test_util
• [ ] tests.unittests.util
• [ ] tools/netplan_schema_check
• [ ] tools/mock-meta

[aciba90]

It is encouraged to split this work on several PRs to ease implementation and review time.