Merge branch 'master' of git.fsmpi.rwth-aachen.de:infra/ansible

ad-auth/tasks/sssd.yml

ad-server/tasks/main.yml

ad-server/templates/smb.conf.j2

nfs-client/files/nfs-common

nfs-client/tasks/main.yml

nfs-server/files/auto.master

nfs-server/files/modprobe-nfs.conf

nfs-server/files/nfs-common

nfs-server/files/nfs-kernel-server

nfs-server/handlers/main.yml

nfs-server/tasks/main.yml

nfs-server/templates/auto.nfs.j2

nfs-server/templates/exports.j2