[ovs-dev] backport request for 2.6: enable kernel datapath check in rpms

[Lance Richardson]

Requesting backports of these commits to the 2.6 branch:

    commit 8ef22bb1ceb7b2841d2e29eb283387f0a3a67ff9
        rhel: add option to run kernel datapath test when building rpms

    commit ed71ac3e23e472378b1d292fcd8d3c43e46fe153
        check-kernel: add recheck support

These appear safe, and would save having to maintain out-of-tree
versions of these commits.

Thanks,

    Lance