LU-15967 build: configure script does not check for required build tools

LU-15967 build: configure script does not check for required build tools

- added check for flex and bison
- added requirement for build kernel modules

Lustre-change: https://review.whamcloud.com/47744
Lustre-commit: 121a79651fc77e5c596716972fb58da7e93f7075

Change-Id: I4f4f19ea44f3cd8f69482d950970bf701e81f7ec
Signed-off-by: Alex Deiter <alex.deiter@gmail.com>
Reviewed-on: https://review.whamcloud.com/47745
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>