merging ubuntu branch and now off to test GPU on centos

.gitlab-ci.yml

CICD/heat/gc_HOT.yaml

CICD/plays/allnodes.yml

CICD/plays/mgmtnodes.yml

CICD/tests/all/check.yml

CICD/vars/slurm.yml

CICD/vars/vars.yml

roles/calculateSlurmConf/templates/slurm.conf.j2

roles/config_repos/tasks/main.yml

roles/gpu/tasks/main.yml

roles/lmod/tasks/main.yml

roles/mysql/tasks/Centos_7_mysql_server.yml

roles/mysql/tasks/Ubuntu_18_mysql_server.yml

roles/mysql/tasks/main.yml

roles/mysql/tasks/mysql_server.yml

roles/mysql/vars/Ubuntu_18.yml

roles/nfs-client/tasks/main.yml

roles/nfs-client/tasks/mountFileSystem.yml

roles/nfs-common/tasks/aptPackages.yml

roles/nfs-server/tasks/startServer.yml