Test adding a new transport version

Author: mark-vieira

.buildkite/scripts/update-transport-versions.sh

@@ -0,0 +1,36 @@
+#!/bin/bash
+
+if [[ -z "${BUILDKITE_PULL_REQUEST:-}" ]]; then
+  echo "Not a pull request, skipping transport version update"
+  exit 0
+fi
+
+if ! git diff --exit-code; then
+  echo "Changes are present before updating transport versions, not running"
+  git status
+  exit 0
+fi
+
+NEW_COMMIT_MESSAGE="[CI] Update transport versions"
+
+echo "--- Generating updated transport version definitions"
+.ci/scripts/run-gradle.sh generateTransportVersionDefinition
+
+if git diff --exit-code; then
+  echo "No changes found after updating transport versions. Don't need to auto commit."
+  exit 0
+fi
+
+git config --global user.name elasticsearchmachine
+git config --global user.email '[email protected]'
+
+gh pr checkout "${BUILDKITE_PULL_REQUEST}"
+git add -u .
+git commit -m "$NEW_COMMIT_MESSAGE"
+git push
+
+# After the git push, the new commit will trigger a new build within a few seconds and this build should get cancelled
+# So, let's just sleep to give the build time to cancel itself without an error
+# If it doesn't get cancelled for some reason, then exit with an error, because we don't want this build to be green (we just don't want it to generate an error either)
+sleep 300
+exit 1

x-pack/plugin/ccr/src/main/java/org/elasticsearch/xpack/ccr/CCRInfoTransportAction.java

@@ -29,6 +29,7 @@ public class CCRInfoTransportAction extends XPackInfoFeatureTransportAction {
 
     private final boolean enabled;
     private final XPackLicenseState licenseState;
+    private final TransportVersion transportVersion = TransportVersion.fromName("my-transport-version");
 
     @Inject
     public CCRInfoTransportAction(