Update usage metric for mattermost_enabled

config/metrics/settings/20210204124908_mattermost_enabled.yml

 ---
 key_path: mattermost_enabled
 description: Whether Mattermost is enabled
-product_section: growth
-product_stage: growth
-product_group: group::product intelligence
-product_category: collection
+product_section: dev
+product_stage: create
+product_group: group::ecosystem
+product_category: integrations
 value_type: boolean
 status: data_available
 time_frame: none
 data_source: system
 distribution:
 - ce
+- ee
 tier:
 - free
-skip_validation: true
+- premium
+- ultimate

doc/development/usage_ping/dictionary.md

@@ -7348,11 +7348,11 @@ Whether Mattermost is enabled
 
 [YAML definition](https://gitlab.com/gitlab-org/gitlab/-/blob/master/config/metrics/settings/20210204124908_mattermost_enabled.yml)
 
-Group: `group::product intelligence`
+Group: `group::ecosystem`
 
 Status: `data_available`
 
-Tiers: `free`
+Tiers: `free`, `premium`, `ultimate`
 
 ### `object_store.artifacts.enabled`