use patch instead of put to update router. Fixes #1778. (#1780)
use patch instead of put to update router. Fixes #1778. (#1780)

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/cc @danawillow
terraform-providers/terraform-provider-google,drebes/terraform-provider-google,ubschmidt2/terraform-provider-google,hashicorp/terraform-provider-google-beta,hashicorp/terraform-provider-google-beta,drebes/terraform-provider-google,hashicorp/terraform-provider-google,drebes/terraform-provider-google,hashicorp/terraform-provider-google,drebes/terraform-provider-google,ubschmidt2/terraform-provider-google,ubschmidt2/terraform-provider-google,terraform-providers/terraform-provider-google,hashicorp/terraform-provider-google-beta,terraform-providers/terraform-provider-google,terraform-providers/terraform-provider-google,hashicorp/terraform-provider-google-beta,hashicorp/terraform-provider-google,hashicorp/terraform-provider-google,terraform-providers/terraform-provider-google,ubschmidt2/terraform-provider-google