qa: wait rank 0 to become up:active state before mounting fuse client Reviewed-by: Venky Shankar <vshankar@redhat.com> Reviewed-by: Patrick Donnelly <pdonnell@redhat.com> Reviewed-by: Dhairya Parmar <dparmar@redhat.com> Reviewed-by: Kotresh HR <khiremat@redhat.com> Reviewed-by: Jos Collin <jcollin@redhat.com> Reviewed-by: Neeraj Pratap Singh <neesingh@redhat.com>