mount:Handle -o transport option in mount.glusterfs

In current scenario ,when tcp transport type(default)
specified for mounting,glusterfs mount script won't
append '.tcp' to volume name.But to accommodate the change
in http://review.gluster.org/#/c/9146/, we need to
append ".tcp" with volfile-id if '-o transport=tcp' is given.


Change-Id: I506edeb339de062087f820f10e17c7d67b8b63fe
BUG: 1164079
Signed-off-by: Mohammed Rafi KC <rkavunga@redhat.com>
Reviewed-on: http://review.gluster.org/9147
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: jiffin tony Thottan <jthottan@redhat.com>
Reviewed-by: Raghavendra Talur <rtalur@redhat.com>
Reviewed-by: Raghavendra G <rgowdapp@redhat.com>
Tested-by: Raghavendra G <rgowdapp@redhat.com>