This controls what traffic is diverted through the Serverless VPC
Access connector resource. By default, PRIVATE_RANGES_ONLY is used.
Values:
VPC_CONNECTOR_EGRESS_SETTINGS_UNSPECIFIED (0):
Unspecified.
PRIVATE_RANGES_ONLY (1):
Use the Serverless VPC Access connector only
for private IP space from RFC1918.
ALL_TRAFFIC (2):
Force the use of Serverless VPC Access
connector for all egress traffic from the
function.