The /config/server/info REST endpoint now provides almost all
configuration parameters which are needed by the Gerrit Client.
GerritConfig still contains 3 values. 2 cannot easily be exposed via
REST due to missing Guice bindings in the REST API layer (sshdAddress,
documentationAvailable), 1 is not used on client-side (gitDaemonUrl).
Further cleanups will be done in follow-up changes.
Change-Id: I660db7aa63253cb6a448079228301461dd1aa06f
Signed-off-by: Edwin Kempin <edwin.kempin@sap.com>