ci(aio): run docs-tests in travis (#14097)

scripts/ci-lite/test.sh

@@ -13,6 +13,7 @@ cd ../..
 ./scripts/ci-lite/test_e2e.sh
 ./scripts/ci-lite/test_saucelabs.sh
 ./scripts/ci-lite/test_browserstack.sh
+./scripts/ci-lite/test_docs.sh
 
 echo 'travis_fold:end:test-browser'
 

scripts/ci-lite/test_docs.sh

@@ -0,0 +1,19 @@
+#!/usr/bin/env bash
+
+set -ex -o pipefail
+
+if [[ ${TRAVIS} && ${CI_MODE} != "docs_test" ]]; then
+  exit 0;
+fi
+
+
+echo 'travis_fold:start:test_docs'
+
+# Setup environment
+cd `dirname $0`
+source ./env.sh
+cd ../..
+
+$(npm bin)/gulp docs-test
+
+echo 'travis_fold:end:test_docs'