Pull down the submodule over https instead of ssh

2 jobs for master in 34 seconds (queued for 1 second)
Name Stage Failure
build-debian-stretch Build
Cloning into '/builds/rude/build/rude'...
Permission denied (publickey).
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.
fatal: clone of 'git@scm.uninett.no:rude/rude.git' into submodule path '/builds/rude/build/rude' failed
Failed to clone 'rude' a second time, aborting
ERROR: Job failed: exit code 1