Add kube-auth to mellon (CI)

4 jobs for beta in 11 seconds (queued for 3 seconds)
Name Stage Failure
mellon beta Prepare
Skipping Git submodules setup
Authenticating with credentials from job payload (GitLab Registry)
$ mkdir $HOME/.kube
$ touch $HOME/.kube/config
$ echo "$KUBE_CONFIG" >> $HOME/.kube/config
$ cd mellon/${CI_COMMIT_REF_NAME}
$ kubectl -n cbio-on-demand${NAMESPACE} create configmap cert --from-file=http_cbiood_${CI_COMMIT_REF_NAME}
Error from server (AlreadyExists): configmaps "cert" already exists
ERROR: Job failed: exit code 1