Add bastionnsg and remove allowedvalues to fix invalidtype error

[jayhaddad]

Description

1. Added nsg for bastion subnet
2. Removed allowedValues check on deployDefenderPlans array

Issue reference

The issue this PR will close: #930 #986

Checklist

Please make sure you've completed the relevant tasks for this PR out of the following list:

• All acceptance criteria in the backlog item are met
• The documentation is updated to cover any new or changed features
• Manual tests have passed
• Relevant issues are linked to this PR

[jamasten]

Verified the NSG rules with: https://learn.microsoft.com/en-us/azure/bastion/bastion-nsg#apply

Successfully deployed the branch:

Successfully connected to the remote access VM using bastion
Verified the NSG name
Verified redeployment works with the Defender Plans config:

Thank you @jayhaddad for the contribution!

[jamasten]

Verified the NSG rules with: https://learn.microsoft.com/en-us/azure/bastion/bastion-nsg#apply

Successfully deployed the branch:

Successfully connected to the remote access VM using bastion
Verified the NSG name
Verified redeployment works with the Defender Plans config:

Thank you @jayhaddad for the contribution!