kvm: add support nicAdapter detail for vm and template settings for KVM

[yadvr]

Fixes #6533

This adds the option returned in API which in turn shows the option and possible values in the UI.

[yadvr]

@blueorangutan package

[blueorangutan]

@rohityadavcloud a Jenkins job has been kicked to build packages. It will be bundled with KVM, XenServer and VMware SystemVM templates. I'll keep you posted as I make progress.

[blueorangutan]

Packaging result: ✔️ el7 ✔️ el8 ✔️ debian ✔️ suse15. SL-JID 3721

[yadvr]

@blueorangutan test

[blueorangutan]

@rohityadavcloud a Trillian-Jenkins test job (centos7 mgmt + kvm-centos7) has been kicked to run smoke tests

[sonarqubecloud]

SonarCloud Quality Gate failed.   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
1 Code Smell

0.0% Coverage
0.0% Duplication

[sureshanaparti]

code LGTM, needs testing (mainly, with nic adapter and root disk controller options)

[harikrishna-patnala]

Changes wrt PR looks good and I can see the "nicAdapter" from VM settings. When I change/set the nicAdapter the interface is set accordingly on the VM.

One observation I've made with the "rootDiskController" during this testing is,
If rootDiskController is changed to "ide" then it is not reflected on VM.
@sureshanaparti do you think it's an issue to be fixed, not in this PR but as a separate one.

cc @rohityadavcloud @GabrielBrascher @weizhouapache any suggestion here.

[Pearl1594]

@harikrishna-patnala wrt to rootdiskcontroller setting, if the root disk and data disk controller settings are already defined on the template, then they take precedence over the setting on the VM - PR: #6276 attempts to fix that anomaly.

[Pearl1594]

LGTM

[yadvr]

Thanks for review/testing @harikrishna-patnala @Pearl1594 @sureshanaparti

[blueorangutan]

Trillian test result (tid-4438)
Environment: kvm-centos7 (x2), Advanced Networking with Mgmt server 7
Total time taken: 40428 seconds
Marvin logs: https://github.com/blueorangutan/acs-prs/releases/download/trillian/pr6536-t4438-kvm-centos7.zip
Smoke tests completed. 97 look OK, 1 have errors
Only failed tests results shown below:

Test	Result	Time (s)	Test File
test_hostha_kvm_host_degraded	Error	666.05	test_hostha_kvm.py