Restrict overly permissive firewall permissions for Shared VPC and non-Shared VPC

[shreyansvm]

When deploying OSD on Google Cloud using WIF authentication type, reduce Compute Network Administrator and Compute Security Administrator required for Shared VPC installations, and the following during non-Shared VPC installations

• compute.firewalls.create and compute.firewalls.delete in the osd_deployer_v4.xx role
• compute.firewalls.create and compute.firewalls.delete in the gcp_cloud_controller_manager_v4.xx role
• iam.serviceAccounts.actAs permission at the project level in the machine_api_gcp_v4.xx role
• iam.serviceAccountUser role at the GCP project level in the operator-gcp-pd-csi-driver-operator's Service Account