Adding ula internal ipv6 support in compute_network and subnetwork

mmv1/products/compute/api.yaml

@@ -8055,6 +8055,21 @@ objects:
           Maximum Transmission Unit in bytes. The minimum value for this field is 1460
           and the maximum value is 1500 bytes.
         input: true
+      - !ruby/object:Api::Type::Boolean
+        name: 'enableUlaInternalIpv6'
+        description: |
+          Enable ULA internal ipv6 on this network. Enabling this feature will assign 
+          a /48 from google defined ULA prefix fd20::/20.
+        input: true
+      - !ruby/object:Api::Type::String
+        name: 'internalIpv6Range'
+        description: |
+          When enabling ula internal ipv6, caller optionally can specify the /48 range 
+          they want from the google defined ULA prefix fd20::/20. The input must be a 
+          valid /48 ULA IPv6 address and must be within the fd20::/20. Operation will 
+          fail if the speficied /48 is already in used by another resource. 
+          If the field is not speficied, then a /48 range will be randomly allocated from fd20::/20 and returned via this field.
+        input: true
   - !ruby/object:Api::Resource
     name: 'NetworkEndpoint'
     kind: 'compute#networkEndpoint'
@@ -14961,6 +14976,7 @@ objects:
         name: 'ipv6AccessType'
         values:
           - :EXTERNAL
+          - :INTERNAL
         description: |
           The access type of IPv6 address this subnet holds. It's immutable and can only be specified during creation
           or the first time the subnet is updated into IPV4_IPV6 dual stack. If the ipv6_type is EXTERNAL then this subnet

mmv1/products/compute/terraform.yaml

@@ -1479,6 +1479,8 @@ overrides: !ruby/object:Overrides::ResourceOverrides
         default_from_api: true
       mtu: !ruby/object:Overrides::Terraform::PropertyOverride
         default_from_api: true
+      internalIpv6Range: !ruby/object:Overrides::Terraform::PropertyOverride
+        default_from_api: true
     custom_code: !ruby/object:Provider::Terraform::CustomCode
       post_create: templates/terraform/post_create/compute_network_delete_default_route.erb
   NetworkEndpoint: !ruby/object:Overrides::Terraform::ResourceOverride
@@ -2927,6 +2929,12 @@ overrides: !ruby/object:Overrides::ResourceOverrides
         vars:
           subnetwork_name: "ipv6-test-subnetwork"
           network_name: "ipv6-test-network"
+      - !ruby/object:Provider::Terraform::Examples
+        name: "subnetwork_internal_ipv6"
+        primary_resource_id: "subnetwork-internal-ipv6"
+        vars:
+          subnetwork_name: "internal-ipv6-test-subnetwork"
+          network_name: "internal-ipv6-test-network"
   TargetHttpProxy: !ruby/object:Overrides::Terraform::ResourceOverride
     examples:
       - !ruby/object:Provider::Terraform::Examples

mmv1/templates/terraform/examples/subnetwork_internal_ipv6.tf.erb

@@ -0,0 +1,17 @@
+resource "google_compute_subnetwork" "subnetwork-internal-ipv6" {
+  name          = "<%= ctx[:vars]['subnetwork_name'] %>"
+
+  ip_cidr_range = "10.0.0.0/22"
+  region        = "us-west2"
+
+  stack_type       = "IPV4_IPV6"
+  ipv6_access_type = "INTERNAL"
+
+  network       = google_compute_network.custom-test.id
+}
+
+resource "google_compute_network" "custom-test" {
+  name                    = "<%= ctx[:vars]['network_name'] %>"
+  auto_create_subnetworks = false
+  enable_ula_internal_ipv6 = true
+}