Fix roles default vars to correctly use edpm_service_name

[karelyatin]

Some vars were not using "edpm_service_name" for the generated content, this patch fixes it.

Additionally fixed some unused vars.

[softwarefactory-project-zuul[bot]]

Build failed (check pipeline). Post recheck (without leading slash) to rerun all jobs. Make sure the failure cause has been resolved before you rerun jobs.

https://review.rdoproject.org/zuul/buildset/f740d5b512de465898c40fc04b3e06e5

:heavy_check_mark: openstack-k8s-operators-content-provider SUCCESS in 2h 04m 11s :heavy_check_mark: podified-multinode-edpm-deployment-crc SUCCESS in 1h 41m 49s :heavy_check_mark: cifmw-crc-podified-edpm-baremetal SUCCESS in 1h 42m 27s :heavy_check_mark: edpm-ansible-molecule-edpm_bootstrap SUCCESS in 7m 24s :heavy_check_mark: edpm-ansible-molecule-edpm_podman SUCCESS in 6m 25s :heavy_check_mark: edpm-ansible-molecule-edpm_module_load SUCCESS in 5m 19s :heavy_check_mark: edpm-ansible-molecule-edpm_kernel SUCCESS in 12m 33s :heavy_check_mark: edpm-ansible-molecule-edpm_libvirt SUCCESS in 10m 12s :heavy_check_mark: edpm-ansible-molecule-edpm_nova SUCCESS in 10m 49s :x: edpm-ansible-molecule-edpm_frr FAILURE in 5m 55s :heavy_check_mark: edpm-ansible-molecule-edpm_iscsid SUCCESS in 4m 23s :x: edpm-ansible-molecule-edpm_ovn_bgp_agent FAILURE in 7m 15s :heavy_check_mark: edpm-ansible-molecule-edpm_ovs SUCCESS in 5m 39s

[openshift-ci[bot]]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: jpodivin, karelyatin

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