VPCSCPolicy is the VPC SC policy for project and location.
Values:
VPCSC_POLICY_UNSPECIFIED (0):
VPCSC_POLICY_UNSPECIFIED - the VPS SC policy is not defined.
When VPS SC policy is not defined - the Service will use the
default behavior (VPCSC_DENY).
DENY (1):
VPCSC_DENY - repository will block the requests to the
Upstreams for the Remote Repositories if the resource is in
the perimeter.
ALLOW (2):
VPCSC_ALLOW - repository will allow the requests to the
Upstreams for the Remote Repositories if the resource is in
the perimeter.