tests: Use uniform timeouts

Change-Id: I479ab941b3b2da3b16f624400fbd300f08326268
BUG: 1092850
Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
Reviewed-on: http://review.gluster.org/7799
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>