Obsolete hmac-sha1 MAC Cipher no longer valid in newer versions of 20.10

[Eraldoe]

https://github.com/nuagenetworks/nuage-metroae/blob/67cd8c8996c4717ac0a4021789fa86cdf83488f2/src/roles/vsc-deploy/templates/ssh_hardening.cfg.j2#L41C43-L41C43

When running metro with 20.10R13 it failed with the following error:

MAJOR: CLI #1009 An error occurred while processing a CLI command -
File cf1:\config.cfg, Line 82: Command "mac 215 name hmac-sha1" failed.

I confirmed in the VSC CLI that in that version hmac-sha1 is no longer available as an option.

I don't think we can simply remove this line if clients depend on it in lower versions. Can we add to the jinja template to remove this line selectively based on version greater than 20.10R12 (do need to confirm the exact version we obsoleted this cipher)

[nokia-dahal]

Noted. Will be fixed in new release.