Merge branch 'update-operations-metrics-empty-state' into 'master'

Update operations metrics empty state

See merge request gitlab-org/gitlab-ce!21974

app/views/projects/environments/empty.html.haml

 - page_title _("Metrics")
 
-.row
+.row.empty-state
   .col-sm-12
     .svg-content
       = image_tag 'illustrations/operations_metrics_empty.svg'
-.row.empty-environments
-  .col-sm-12.text-center
-    %h4
+  .col-12
+    .text-content
+      %h4.text-center
         = s_('Metrics|No deployed environments')
-    .state-description
+      %p.state-description
         = s_('Metrics|Check out the CI/CD documentation on deploying to an environment')
-    .prepend-top-10
+      .text-center
         = link_to s_("Metrics|Learn about environments"), help_page_path('ci/environments'), class: 'btn btn-success'

changelogs/unreleased/update-operations-metrics-empty-state.yml

+---
+title: Update operations metrics empty state
+merge_request: 21974
+author: George Tsiolis
+type: other