Update IPv4Range to autoCreateSubnetworks

[akmurad]

Hi, I'm deploying TeamCity using instructions and getting an error described below:

ERROR: (gcloud.deployment-manager.deployments.create) Error in Operation [operation-1636108182089-5d0081f01ef4f-1fcdd8dd-f0fd0b03]: errors:
- code: RESOURCE_ERROR
  location: /deployments/teamcitydev/resources/teamcitydev-network
  message: '{"ResourceType":"compute.v1.network","ResourceErrorCode":"400","ResourceErrorMessage":{"code":400,"errors":[{"domain":"global","message":"Creation
    of legacy mode networks is deprecated. Please create a subnet mode network instead
    by removing the IPv4Range field and adding the autoCreateSubnetworks field to
    your network insert request.","reason":"badRequest"}],"message":"Creation of legacy
    mode networks is deprecated. Please create a subnet mode network instead by removing
    the IPv4Range field and adding the autoCreateSubnetworks field to your network
    insert request.","statusMessage":"Bad Request","requestPath":"https://compute.googleapis.com/compute/v1/projects/PROJECTNAME/global/networks","httpMethod":"POST"}}'

Looks like it's complaining about this line

teamcity-google-template/network.jinja

Line 22 in 0b4b99a

IPv4Range: 10.240.0.0/16

Please update as GCP no longer supports Legacy, thanks

[darkn3rd]

This hasn't even been looked at in over a year. :'(