Update Metrics definitions for Product Intelligence group

Imported metrics definition YAML files for ~"group::product intelligence"

Please update the definitions with the required attributes, remove the skip_validation attribute and make sure they validate when running specs.

# Tests should pass
bundle exec rspec spec/lib/gitlab/usage/ 

Generating dictionary

bundle exec rake gitlab:usage_data:generate_metrics_dictionary 

Attributes that require attention

• description
• section
• stage
• group
• value_type
• time_frame
• data_source
• distribution
• tier

Check the location of the metric

If metric is available under ce, ee, or both

If metric is available only under ee then it should be under ee/config/metrics

List of metrics:

• ~"group::product intelligence" @kokeefe signup_enabled config/metrics/settings/20210204124918_signup_enabled.yml

• ~"group::product intelligence" @kokeefe elasticsearch_enabled config/metrics/settings/20210204124924_elasticsearch_enabled.yml

• ~"group::product intelligence" @kokeefe recording_ce_finished_at config/metrics/license/20210204124938_recording_ce_finished_at.yml

• ~"" counts_weekly.aggregated_metrics.product_analytics_test_metrics_union ee/config/metrics/counts_7d/20210216183213_product_analytics_test_metrics_union.yml

• ~"" counts_weekly.aggregated_metrics.product_analytics_test_metrics_intersection ee/config/metrics/counts_7d/20210216183215_product_analytics_test_metrics_intersection.yml

• ~"" counts_monthly.aggregated_metrics.product_analytics_test_metrics_union config/metrics/counts_28d/20210216183203_product_analytics_test_metrics_union.yml

• ~"" counts_monthly.aggregated_metrics.product_analytics_test_metrics_intersection config/metrics/counts_28d/20210216183205_product_analytics_test_metrics_intersection.yml

• Generate dictionary