bugfix for https://github.com/google/caliban/issues/65: do not add resource maxima when quota is < 1 (#67)
bugfix for https://github.com/google/caliban/issues/65: do not add resource maxima when quota is < 1 (#67)

This addresses an error where we specify resource maxima for GKE clusters using quota information returned from the GCP compute API. The API can return a quota of zero for a given resource type, but requesting a limit of zero in the cluster creation API causes an error, so this change prevents setting a limit of zero for any resource.
google/caliban,google/caliban