CI: don’t build jekyll redirects for now

Signed-off-by: Adrien Duermael <adrien@duermael.com>

Jenkinsfile

@@ -3,6 +3,15 @@ wrappedNode(label: 'linux && x86_64') {
  stage "checkout"
  checkout scm
  stage "test"
+
+ # Jekyll creates html files to implement client side redirects.
+ # There are absolute links to docs.docker.com in these htmls
+ # we don't want them to be parsed by the tests for now.
+ # Removing jekyll-redirect-from option will make sure these pages
+ # are not generated when building with Jekyll.
+ sh "awk '/jekyll-redirect-from/{n=1}; n {n--; next}; 1' < _config.yml > _config.yml.tmp"
+ sh "mv _config.yml.tmp _config.yml"
+ 
  sh "docker build -t docs `pwd`"
  sh "docker build -t tests `pwd`/tests"
  sh "docker run -v /usr/src/app/allvbuild --name docs docs /bin/true"