Adding support for NSXT-9 policy only

[msrinivasssa]

Description

bosh-vsphere-cpi specs has tests which uese NSXT Manager APIs extensively. With VCF9 release, the manager mode is removed completely and only Policy APIs are supported.

Ported the specs to use Policy APIs when nsxt_policy_only flag is included.

Whats Added:

1. Added NSXT-9 swagger ruby client
2. Added separate test specs for using policy tests.

Related PR and Issues

Fixes # (issue)

Impacted Areas in Application

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Type of change

Please delete options that are not relevant.

• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] This change requires a documentation update

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

• [ ] Test A
• [ ] Test B

Test Configuration:

• Environment Variables for Integration test:
• Hardware Requirements in ESXi:
• Toolchain:
• SDK:

Checklist:

• [ ] My code follows the standard ruby style guide
• [ ] I have performed a self-review of my own code
• [ ] I have commented my code, particularly in hard-to-understand areas
• [ ] I have added tests that prove my fix is effective or that my feature works
• [ ] New and existing unit tests pass locally with my changes

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[Alphasite]

Im waiting on getting the bats for vc9 tests green before we merge this.