gcp - added gce-project, regions

[evhenyshaliov]

Use cases:

• regions are required for artifactregistry

policies:
  - name: epam-oslogin-disables
    description: |
      OS Login is not enabled for a Project
    resource: gcp.gce-project
    filters:
      - not:
          - type: value
            key: commonInstanceMetadata.items[?key == `enable-oslogin`].value
            value:
              - "TRUE"
              - "True"
              - "true"
            op: intersect

[kapilt]

I do wonder if we should just statically do the gcp regions as internal data feed we update with dependency tree before releases, maybe using this as a feed https://www.gstatic.com/ipranges/cloud.json

[kapilt]

per offline discussion a two weeks back, I went ahead and added #8517 to model regions independently of making an api call. we should remove zones from this.

[kapilt]

lgtm, thanks