Reconcile service plan resource properties between OpenAPI (v2/3) and spec

[WalkerGriggs]

What is the problem this PR solves?

Adds missing properties to the service plan resource in both the Swagger and OpenAPI spec. Specifically:

To openapi.yaml:

• plan_updateable
• maximum_polling_duration
• binding_rotatable

To swagger.yaml:

• binding_rotatable

Fixes: #739

Checklist:

• [x] The swagger.yaml doc has been updated with any required changes
• [x] The openapi.yaml doc has been updated with any required changes

[linux-foundation-easycla[bot]]

The committers are authorized under a signed CLA.

• :white_check_mark: Walker (f7a2e36545be6770c904a2505c7843053d6189f2, 47fbff604d144e9f5884d8bc5a8ada1bf0ce3984)

[Samze]

LGTM thanks @WalkerGriggs