Add performance_indicator_type to metric yaml

Update generator and specs

config/metrics/schema.json

@@ -72,6 +72,13 @@
         "enum": ["ee", "ce"]
       }
     },
+    "performance_indicator_type": {
+      "type": "array",
+      "items": {
+        "type": "string",
+        "enum": ["gmau", "smau", "paid_gmau", "umau"]
+      }
+    },
     "tier": {
       "type": "array",
       "items": {

doc/development/service_ping/metrics_dictionary.md

@@ -40,6 +40,7 @@ Each metric is defined in a separate YAML file consisting of a number of fields:
 | `data_category`     | yes      | `string`; [categories](#data-category) of the metric, may be set to `Operational`, `Optional`, `Subscription`, `Standard`. The default value is `Optional`.|
 | `instrumentation_class` | no   | `string`; [the class that implements the metric](metrics_instrumentation.md).  |
 | `distribution`      | yes      | `array`; may be set to one of `ce, ee` or `ee`. The [distribution](https://about.gitlab.com/handbook/marketing/strategic-marketing/tiers/#definitions) where the tracked feature is available.  |
+| `performance_indicator_type`  | no      | `array`; may be set to one of [`gmau`, `smau`, `paid_gmau`, or `umau`](https://about.gitlab.com/handbook/business-technology/data-team/data-catalog/xmau-analysis/). |
 | `tier`              | yes      | `array`; may be set to one of `free, premium, ultimate`, `premium, ultimate` or `ultimate`. The [tier]( https://about.gitlab.com/handbook/marketing/strategic-marketing/tiers/) where the tracked feature is available. |
 | `milestone`         | no       | The milestone when the metric is introduced. |
 | `milestone_removed` | no       | The milestone when the metric is removed. |

generator_templates/usage_metric_definition/metric_definition.yml

@@ -12,6 +12,7 @@ introduced_by_url:
 time_frame: <%= time_frame %>
 data_source:
 data_category: Optional
+performance_indicator_type:
 distribution:
 <%= distribution %>
 tier:

spec/fixtures/lib/generators/gitlab/usage_metric_definition_generator/sample_metric.yml

@@ -13,6 +13,7 @@ introduced_by_url:
 time_frame: 7d
 data_source:
 data_category: Operational
+performance_indicator_type:
 distribution:
 - ce
 # Add here corresponding tiers

spec/fixtures/lib/generators/gitlab/usage_metric_definition_generator/sample_metric_with_ee.yml

@@ -13,6 +13,7 @@ introduced_by_url:
 time_frame: 7d
 data_source:
 data_category: Optional
+performance_indicator_type:
 distribution:
 - ee
 tier:

spec/fixtures/lib/generators/gitlab/usage_metric_definition_generator/sample_metric_with_name_suggestions.yml

@@ -14,6 +14,7 @@ introduced_by_url:
 time_frame: 7d
 data_source:
 data_category: Optional
+performance_indicator_type:
 distribution:
 - ce
 - ee