Merge branch '55256-bs-spacer' into 'master'

Add spacer and spacers as overrides

Closes #55256

See merge request gitlab-org/gitlab-ce!24459

app/assets/stylesheets/framework/variables_overrides.scss

@@ -34,3 +34,12 @@ $h3-font-size: 14px * 1.75;
 $h4-font-size: 14px * 1.5;
 $h5-font-size: 14px * 1.25;
 $h6-font-size: 14px;
+$spacer: $grid-size;
+$spacers: (
+  0: 0,
+  1: ($spacer * .5),
+  2: ($spacer),
+  3: ($spacer * 2),
+  4: ($spacer * 3),
+  5: ($spacer * 4)
+);