CASMPET-7071: Add new policy for vault access through istio

[ndavidson-hpe]

Summary and Scope

Adds in new allow rules to allow access to vault either to login or using a vault access token.

Issues and Related PRs

• Resolves CASMPET-7071

Testing

Tested on:

• beau

Test description:

How were the changes tested and success verified? If schema changes were part of this change, how were those handled in your upgrade/downgrade testing?

• Were the install/upgrade-based validation checks/tests run (goss tests/install-validation doc)? y
• Were continuous integration tests run? If not, why? y
• Was upgrade tested? If not, why? y
• Was downgrade tested? If not, why? y
• Were new tests (or test issues/Jiras) created for this change? y

Risks and Mitigations

No risk or changes only adds new functionality

Pull Request Checklist

• Version number(s) incremented, if applicable
• Copyrights updated
• License file intact
• Target branch correct
• CHANGELOG.md updated
• Testing is appropriate and complete, if applicable
• HPC Product Announcement prepared, if applicable