CORS-3916: Use gcp custom endpoints in the installer

[barbacbd]

** Added a common file for all GCP API Clients to be created.
** transferred over all client creation to the common file.
** Transferred over a call for resource manager from v1 to v3 in clusterapi. This ensured that all calls were for the same version of the api.

** Note: monitoring service needs to be added to the API.

[openshift-ci-robot]

@barbacbd: This pull request references CORS-3916 which is a valid jira issue.

Warning: The referenced jira issue has an invalid target version for the target branch this PR targets: expected the story to target the "4.19.0" version, but no target version was set.

In response to this:

** Added a common file for all GCP API Clients to be created.
** transferred over all client creation to the common file.
** Transferred over a call for resource manager from v1 to v3 in clusterapi. This ensured that all calls were for the same version of the api.

** Note: monitoring service needs to be added to the API.

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[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[openshift-ci]

@barbacbd: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/e2e-vsphere-static-ovn	e8757bf	link	false	/test e2e-vsphere-static-ovn
ci/prow/okd-scos-e2e-aws-ovn	e8757bf	link	false	/test okd-scos-e2e-aws-ovn
ci/prow/e2e-azure-ovn-resourcegroup	e8757bf	link	false	/test e2e-azure-ovn-resourcegroup
ci/prow/e2e-vsphere-externallb-ovn	e8757bf	link	false	/test e2e-vsphere-externallb-ovn
ci/prow/e2e-vsphere-ovn-multi-network	e8757bf	link	false	/test e2e-vsphere-ovn-multi-network

Full PR test history. Your PR dashboard.

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