adds runner tag support

templates/validation.yml

+spec:
+  inputs:
+    check-links-job-tags:
+      description: tags to filter applicable runners for check-links build job
+      type: array
+      default: []
+    tbc-check-job-tags:
+      description: tags to filter applicable runners for tbc-checklinks build job
+      type: array
+      default: []
+
+---
+
 .lint-scripts: &lint-scripts |
   set -e
   function log_info() {
@@ -69,6 +82,7 @@ check-links:
   stage: build
   script:
     - lychee --exclude www.gnu.org --exclude-path CHANGELOG.md --exclude-path SECURITY.md $LYCHEE_EXTRA_OPTS *.md
+  tags: $[[ inputs.check-links-job-tags ]]
 
 tbc-check:
   image:
@@ -80,3 +94,4 @@ tbc-check:
   rules:
     - exists:
       - kicker.json
+  tags: $[[ inputs.tbc-check-job-tags ]]