tests: s/timeout/EXPECT_WITHIN/

Also fixed nfs.rc so that regression build works on my fedora VM

Change-Id: Ife36343bf1a590430e24065b9bcdf5bed3ae546d
BUG: 1092850
Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
Reviewed-on: http://review.gluster.org/7837
Reviewed-by: Krishnan Parthasarathi <kparthas@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>