LU-6835 build: add -Wall to CFLAGS for test/ and utils/

LU-6835 build: add -Wall to CFLAGS for test/ and utils/

Add -Wall to the CFLAGS used for lustre/{test,utils}/. Fixup missing
includes where needed.

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Change-Id: I19d0739e0a9b5b079665d5d24d54c6dcaad93b0c
Reviewed-on: http://review.whamcloud.com/15392
Reviewed-by: Bob Glossman <bob.glossman@intel.com>
Reviewed-by: James Simmons <uja.ornl@yahoo.com>
Tested-by: Jenkins
Reviewed-by: Dmitry Eremin <dmitry.eremin@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Chris Horn <hornc@cray.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>