SLB: Add Support to isolationConfig on resource google_network_services_service_lb_policies (#15289)

Author: victorsantos-cit

mmv1/products/networkservices/ServiceLbPolicies.yaml

@@ -59,6 +59,12 @@ examples:
     vars:
       resource_name: 'my-lb-policy'
       backend_name: 'my-lb-backend'
+  - name: 'network_services_service_lb_policies_beta'
+    min_version: 'beta'
+    primary_resource_id: 'default'
+    vars:
+      resource_name: 'my-lb-policy'
+      backend_name: 'my-lb-backend'
 parameters:
   - name: 'name'
     type: String
@@ -129,3 +135,27 @@ properties:
           Optional. The percentage threshold that a load balancer will begin to send traffic to failover backends. If the percentage of endpoints in a MIG/NEG is smaller than this value, traffic would be sent to failover backends if possible. This field should be set to a value between 1 and 99. The default value is 50 for Global external HTTP(S) load balancer (classic) and Proxyless service mesh, and 70 for others.
         min_version: 'beta'
         required: true
+  - name: 'isolationConfig'
+    type: NestedObject
+    description: |
+      Configuration to provide isolation support for the associated Backend Service.
+    min_version: 'beta'
+    properties:
+      - name: 'isolationGranularity'
+        type: Enum
+        description: |
+          The isolation granularity of the load balancer.
+        min_version: 'beta'
+        enum_values:
+          - 'ISOLATION_GRANULARITY_UNSPECIFIED'
+          - 'REGION'
+      - name: 'isolationMode'
+        type: Enum
+        description: |
+          The isolation mode of the load balancer.
+        min_version: 'beta'
+        enum_values:
+          - 'ISOLATION_MODE_UNSPECIFIED'
+          - 'NEAREST'
+          - 'STRICT'
+        default_value: 'NEAREST'

mmv1/templates/terraform/examples/network_services_service_lb_policies_beta.tf.tmpl

@@ -0,0 +1,35 @@
+resource "google_network_services_service_lb_policies" "{{$.PrimaryResourceId}}" {
+  provider = google-beta
+
+  name                     = "{{index $.Vars "resource_name"}}"
+  location                 = "global"
+  description              = "my description"
+  load_balancing_algorithm = "SPRAY_TO_REGION"
+
+  auto_capacity_drain {
+    enable = true
+  }
+
+  failover_config {
+    failover_health_threshold = 70
+  }
+
+  isolation_config {
+    isolation_granularity = "REGION"
+    isolation_mode = "NEAREST"
+  }
+
+  labels = {
+    foo = "bar"
+  }
+}
+
+resource "google_compute_backend_service" "default" {
+  provider = google-beta
+
+	name                  = "{{index $.Vars "backend_name"}}"
+	description           = "my description"
+	load_balancing_scheme = "INTERNAL_SELF_MANAGED"
+	protocol              = "HTTP"
+	service_lb_policy     = "//networkservices.googleapis.com/${google_network_services_service_lb_policies.{{$.PrimaryResourceId}}.id}"
+}