fixes #7007 - require pulp-server to be installed before cert work

otherwise /etc/pki/pulp wont exist when we try to add certs to
/etc/pki/pulp/nodes
Merge pull request #26 from jlsherrill/7007

fixes #7007 - require pulp-server to be installed before cert work
fixes #7029 - fixing bootstrap of older rhsm clients

as values had "/"s in them
Merge pull request #27 from jlsherrill/7029

fixes #7029 - fixing bootstrap of older rhsm clients
Refs #6875 - separate the default CA and server CA

Up until now, we used the default CA for both server and client certificates.
This made practically impossible to issue the server certificates outside of
the installer and pass it in as arguments.

By default, the server CA is the same as default CA, unless the $server_ca_cert
is specified.

In the bootstrap rpm, we ship both server CA (for verifying the server) as well
the default CA (for verifying the qpid by the gofer).