LU-12214 build: fix build with MPI

LU-12214 build: fix build with MPI

 lack of MPI library dependence will lost a mpi tests
 from build

Cray-bug-id: LUS-6033, LUS-7204
Test-parameters: trivial
Change-Id: I88b8ad67a9a2863fdcd02e2df5289fdd480c2a74
Signed-off-by: Alexey Lyashkov <c17817@cray.com>
Reviewed-on: https://review.whamcloud.com/36427
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Shaun Tancheff <shaun.tancheff@hpe.com>
Reviewed-by: Alexander Boyko <c17825@cray.com>
Reviewed-by: Sebastien Buisson <sbuisson@ddn.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>