LU-12575 build: add ibutils2 for MOFED build

LU-12575 build: add ibutils2 for MOFED build

MOFED 4.6 include ibutils2 instead of ibutils
Remove ofed rhel5 patch which we don't need

Change-Id: I46c51eb8a194ea86bd8c951944e5c1427d0f37d0
Signed-off-by: Minh Diep <mdiep@whamcloud.com>
Reviewed-on: https://review.whamcloud.com/35590
Tested-by: jenkins <devops@whamcloud.com>
Reviewed-by: Nathaniel Clark <nclark@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Jian Yu <yujian@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>