LU-15417 build: build MOFED 5.5

LU-15417 build: build MOFED 5.5

The path the mofed header files has change to
/usr/src/ofa_kernel/x86_64/<kernel>
so we cannot assume it's /usr/src/ofa_kernel/default

Test-Parameters: trivial
Change-Id: I10f375b459f04b84003e70951e4e423295001f40
Signed-off-by: Minh Diep <mdiep@whamcloud.com>
Reviewed-on: https://review.whamcloud.com/46004
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Jian Yu <yujian@whamcloud.com>