cli: Only admin should run gluster CLI
cli: Only admin should run gluster CLI

Signed-off-by: Pranith Kumar K <pranithk@gluster.com>
Signed-off-by: Vijay Bellur <vijay@dev.gluster.com>

BUG: 1546 (gluster commandline should be available only for super user)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=1546

Kaushikbv/Gluster,Kaushikbv/Gluster,Kaushikbv/Gluster