build: disable RDMA support in RPMs by default
Rather than curiously disable RDMA support by default in configure and
enable it by default in RPM builds, streamline the default
configuration to always turn RDMA support off. It can be enabled in
RPM builds with "--with rdma".
Signed-off-by: Florian Haas <florian.haas@linbit.com>
Reviewed-by: Steven Dake <sdake@redhat.com>
(cherry picked from commit 051bca82df29d3448c55b772a4c4935c70c83643)