This optimizes the bootstrap section for RPM in a couple ways:
1) There's no need to check "rpm -q" before doing "yum install". Yum
will gracefully skip packages that are already installed.
2) Just assume that the user has sudo rights; don't "echo" what they
should do. If there are problems, they can read the bootstrap shell
script to figure out what's going on.
3) Handle all the packages at once; don't loop through them
individually.
Related: http://tracker.ceph.com/issues/11637
Setuptools needs to be upgraded with --no-use-wheel. A change we
already were using in other projects.
Signed-off-by: Sandon Van Ness <sandon@inktank.com>
