Add value for configuring optional annotations for the gslb-avi-scret

[Jaydee94]

This PR adds the possibility to configure annotations on the gslb-avi-secret.

[Dhivyaaj]

No JIRA Ids found for the PR. Jira id is mandatory to update fix version in jira. Please update respective Jira id in PR title or commit message if the PR is intented for default branches of repo. For mandatory exemptions, comment trigger phrase 'skip jira-id-check' in PR. For manual trigger, comment trigger phrase 'run jira-id-check' in PR.

[akshayhavile]

Can one of the admins verify this patch?

[vmwclabot]

@Jaydee94, you must sign our contributor license agreement before your changes are merged. Click here to sign the agreement. If you are a VMware employee, read this for further instruction.

[vmwclabot]

@Jaydee94, we have received your signed contributor license agreement. The review is usually completed within a week, but may take longer under certain circumstances. Another comment will be added to the pull request to notify you when the merge can proceed.

[vmwclabot]

@Jaydee94, VMware has approved your signed contributor license agreement.