Fix tmp tmpfs mount to be idempotent and actually work.

roles/copr/dist_git/tasks/mount_fs.yml

@@ -11,7 +11,5 @@
   mount: name=/var/lib/copr-dist-git src='LABEL=cdg-log' fstype=ext4 state=mounted
   when: not devel
 
-- name: Mount tmp as tmpfs
-  action: lineinfile dest=/etc/fstab  regexp="/tmp" line="tmpfs     /tmp     tmpfs     defaults,size=6G     0     0" state=present
-
-- mount: name=/tmp src=tmpfs fstype=tmpfs state=present
+- name: mount tmp on tmpfs
+  mount: name=/tmp src=tmpfs fstype=tmpfs state=mounted opts=defaults,size=6G