travis: install additional development libraries

travis: install additional development libraries

Change the travis configuration to install development libraries and
headers for librbd (Ceph/rados), glusterfs, libibverbs and librdmacm on
Linux CI builds so we can check the related engines continue to build.

This reverses commit ff56a4e2e0a87e4e3b1cc1e74547d55b295967a6 ("travis:
don't enable rbd") because the previous commit now prevents the rbd
engine being built when the librbd found is too old.

Signed-off-by: Sitsofe Wheeler <sitsofe@yahoo.com>