Add metadata access rule for the VMs in StatelessNetworkSecGroupTest test

Initially the SG with the metadata rule was replaced with the SG
with SSH rule for the active VMs. But sometimes the VMs is active
but is not booted itself and still needs access to metadata service.

Related-prod: PRODX-48621
Change-Id: I946f462a1744edca8d8cf264e3e51ff6aef7839b
(cherry picked from commit aac7ba9c34076ca114b6ec01a0e17b58618e3fc8)
1 file changed