Adding the gitlab source for release (#1137)
Adding the gitlab source for release (#1137)

Signed-off-by: Matthias Wessendorf <8046805a262331760c6cd2411c7603ff9641e112@redhat.com>
knative-sandbox/eventing-github,knative-sandbox/eventing-prometheus,knative-sandbox/eventing-awssqs,knative-sandbox/eventing-kafka,knative-sandbox/eventing-awssqs,knative/eventing-contrib,knative-sandbox/eventing-camel,knative-sandbox/eventing-gitlab,knative-sandbox/eventing-natss,knative-sandbox/eventing-couchdb,knative-sandbox/eventing-ceph,knative-sandbox/eventing-ceph,knative-sandbox/eventing-github,knative-sandbox/eventing-gitlab,knative-sandbox/eventing-prometheus,knative/eventing-contrib,knative-sandbox/eventing-camel,knative-sandbox/eventing-kafka,knative-sandbox/eventing-couchdb,knative-sandbox/eventing-natss