feat: Added support for PromQL queries (#237)

* feat: Added support for PromQL queries

PiperOrigin-RevId: 483996299

Source-Link: googleapis/googleapis@1742ec3

Source-Link: googleapis/googleapis-gen@0ef6832
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiMGVmNjgzMjVhNTA3NGQwYTVjNTRhMzQ3NTdiMTIwNGY5MjdmYTg1NSJ9

* 🦉 Updates from OwlBot post-processor

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packages/google-cloud-monitoring-dashboards/google/cloud/monitoring_dashboard_v1/types/metrics.py

@@ -61,7 +61,12 @@ class TimeSeriesQuery(proto.Message):
 
             This field is a member of `oneof`_ ``source``.
         time_series_query_language (str):
-            A query used to fetch time series.
+            A query used to fetch time series with MQL.
+
+            This field is a member of `oneof`_ ``source``.
+        prometheus_query (str):
+            A query used to fetch time series with
+            PromQL.
 
             This field is a member of `oneof`_ ``source``.
         unit_override (str):
@@ -89,6 +94,11 @@ class TimeSeriesQuery(proto.Message):
         number=3,
         oneof="source",
     )
+    prometheus_query = proto.Field(
+        proto.STRING,
+        number=6,
+        oneof="source",
+    )
     unit_override = proto.Field(
         proto.STRING,
         number=5,

packages/google-cloud-monitoring-dashboards/google/cloud/monitoring_dashboard_v1/types/table_display_options.py

@@ -29,10 +29,8 @@ class TableDisplayOptions(proto.Message):
 
     Attributes:
         shown_columns (Sequence[str]):
-            Optional. Columns to display in the table.
-            Leave empty to display all available columns.
-            Note: This field is for future features and is
-            not currently used.
+            Optional. This field is unused and has been replaced by
+            TimeSeriesTable.column_settings
     """
 
     shown_columns = proto.RepeatedField(