Rename manual job to `package-and-qa`

To make it more clear it's building the package **and** doing QA, rename the job.

.gitlab-ci.yml

@@ -257,7 +257,7 @@ stages:
 ##
 # Trigger a package build in omnibus-gitlab repository
 #
-package-qa:
+package-and-qa:
   <<: *dedicated-runner
   image: ruby:2.4-alpine
   before_script: []