Correct data type for Notebook Instance Owners field, add some enums (#…

…3912)

products/notebooks/api.yaml

@@ -187,14 +187,15 @@ objects:
         description: |
             The proxy endpoint that is used to access the Jupyter notebook.
         output: true
-      - !ruby/object:Api::Type::String
+      - !ruby/object:Api::Type::Array
         name: 'instanceOwners'
         description: |
-            The owner of this instance after creation. 
+            The list of owners of this instance after creation. 
             Format: [email protected].
             Currently supports one owner only. 
             If not specified, all of the service account users of 
             your VM instance's service account can use the instance.
+        item_type: Api::Type::String
       - !ruby/object:Api::Type::String
         name: 'serviceAccount'
         description: |
@@ -237,16 +238,8 @@ objects:
             required: true
             description: |
               Count of cores of this accelerator.
-      - !ruby/object:Api::Type::Enum
+      - !ruby/object:Api::Type::String
         name: 'state'
-        values:
-          - STATE_UNSPECIFIED
-          - STARTING
-          - PROVISIONING
-          - ACTIVE
-          - STOPPING
-          - STOPPED
-          - DELETED
         description: |
             The state of this instance.
         output: true
@@ -267,6 +260,7 @@ objects:
           - DISK_TYPE_UNSPECIFIED
           - PD_STANDARD
           - PD_SSD
+          - PD_BALANCED
         description: |
             Possible disk types for notebook instances.
       - !ruby/object:Api::Type::Integer
@@ -281,6 +275,7 @@ objects:
           - DISK_TYPE_UNSPECIFIED
           - PD_STANDARD
           - PD_SSD
+          - PD_BALANCED
         description: |
             Possible disk types for notebook instances.
       - !ruby/object:Api::Type::Integer
@@ -397,4 +392,4 @@ objects:
     properties:
       - !ruby/object:Api::Type::String
         name: 'name'
-        description: 'Name of the Location resource.'
+        description: 'Name of the Location resource.'