Update preconfiguredNSG to networkSecurityGroupID

[bennerv]

What this PR does

Before this PR:

• preconfigured nsg field was a boolean
  After this PR:
• renamed field to networksecuritygroupid and it's a string
  • should match with https://issues.redhat.com/browse/HOSTEDCP-1557

Jira:
Link to demo recording:

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Checklist

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• PR: The PR description is expressive enough and will help future contributors
• Code: Write code that humans can understand and Keep it simple
• Refactor: You have left the code cleaner than you found it (Boy Scout Rule)
• Upgrade: Impact of this change on upgrade flows was considered and addressed if required
• Deployment: The deployment process was considered and addressed if required
• Testing: New code requires new unit tests.
• Documentation: Is the documentation updated? Either in the doc located in focus area, in the README or in the code itself.
• Customers: Is this change affecting customers? Is the release plan considered?