LU-15573 build: remove mpi, CC deps from config cache

LU-15573 build: remove mpi, CC deps from config cache

Also drop mpi and CC dependencies compiler type from the
initial values in the configure cache as these may be
changed during the setup in the rpm spec or debian build rules

Lustre-change: https://review.whamcloud.com/46562
Lustre-commit: 8b3f2a030d2af15938faea816c73e3d04fe0ff33

Test-Parameters: trivial
Fixes: a5084c2f2e ("LU-14937 build: re-use config cache in 'make rpms/debs'")
Signed-off-by: Shaun Tancheff <shaun.tancheff@hpe.com>
Change-Id: I986c2ae3653deae08b9da8d64d0b3c02fdc8fa2b
Reviewed-by: Petros Koutoupis <petros.koutoupis@hpe.com>
Reviewed-by: Sebastien Buisson <sbuisson@ddn.com>
Reviewed-on: https://review.whamcloud.com/47711
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>