Allow SP installation to be on non-standard ports

Allow SP installation to be on non-standard ports

When setting up a SP using ipsilon-client-install, there is no
ability to use a non-standard port.  We should allow a port number
to be specified that results in the proper URLs in the SP metadata.

This patch adds a --port option to ipsilon-client-install.  This is
used in the construction of the URLs used in the SP metadata as well
as in the httpd redirect rules if httpd is being configured.

https://fedorahosted.org/ipsilon/ticket/92

Signed-off-by: Nathan Kinder <nkinder@redhat.com>
Reviewed-by: Rob Crittenden <rcritten@redhat.com>