Upgrade nomad, podman driver. Added many features.

[blmhemu]

List of changes:

• [x] Updated podman driver to 0.3.0
• [x] Added host_network support
• [x] Updated nomad to version 1.1.1
• [x] Added cni support
• [x] Added support for copying tls certs from local machine
• [x] Added support for setting SSL in consul stanza

Details: Podman driver: Was getting some errors in version 0.1.0 Also since 0.2.0 is out, we can upgrade it to the same. Also, errors resolved after upgrading. Nomad config: Also added support for host networks similar to host volumes. Nomad: Maintainance upgrade to 1.1.1

[blmhemu]

@maintainers please review and merge the changes ! @Blefish