[Breaking] Reorg the user-group apis with a explicit google group spe…

…c field. (#33)

temporal/api/cloud/cloudservice/v1/request_response.proto

@@ -359,8 +359,15 @@ message GetUserGroupsRequest {
     string page_token = 2;
     // Filter groups by the namespace they have access to - optional.
     string namespace = 3;
-    // Filter groups by their name - optional.
-    string group_name = 4;
+    // Filter groups by the display name - optional.
+    string display_name = 4;
+    // Filter groups by the google group specification - optional.
+    GoogleGroupFilter google_group = 5;
+
+    message GoogleGroupFilter {
+        // Filter groups by the google group email - optional.
+        string email_address = 1;
+    }
 }
 
 message GetUserGroupsResponse {

temporal/api/cloud/identity/v1/message.proto

@@ -70,12 +70,20 @@ message User {
     google.protobuf.Timestamp last_modified_time = 8;
 }
 
+message GoogleGroupSpec {
+    // The email address of the Google group.
+    // The email address is immutable. Once set during creation, it cannot be changed.
+    string email_address = 1;
+}
+
 message UserGroupSpec {
-    // The name of the group as defined in the customer's IdP (e.g. Google group name in Google Workspace)
-    // The name is immutable. Once set, it cannot be changed
-    string name = 1;
-    // The access assigned to the group
+    // The display name of the group.
+    string display_name = 1;
+    // The access assigned to the group.
     Access access = 2;
+    // The specification of the google group that this group is associated with.
+    // For now only google groups are supported, and this field is required.
+    GoogleGroupSpec google_group = 3;
 }
 
 message UserGroup {