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

Change-Id: I4f4f19ea44f3cd8f69482d950970bf701e81f7ec
Signed-off-by: Alex Deiter <alex.deiter@gmail.com>
Reviewed-on: https://review.whamcloud.com/47744
Tested-by: jenkins <devops@whamcloud.com>
Reviewed-by: James Simmons <jsimmons@infradead.org>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>