cli: fail vol set when value = empty string/string with all whitespaces

PROBLEMS:

a. 'volume set' operation accepts empty strings and strings containing
   all whitespaces for value. The result - subsequent attempts to start
   glusterd fail.

b. 'volume set group' operation, when passed an empty string or string
   containing all spaces as value, fopens the wrong file.

FIX:

Made volume set parser in cli check for and invalidate value if its length
is 0 after all the whitespaces have been stripped off.

Change-Id: I6792ee1fe9452d8e25e1fd1eeb1b9981be3389f1
BUG: 859927
Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com>
Reviewed-on: http://review.gluster.org/4246
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>

0 files changed, 0 insertions, 0 deletions