Prevent to update project list for pseudo servers

In pseudo mode, gerrit server does not have valid parameter values for
ssh connection. So project list updater cannot run.

This patch disables updater if gerrit server is pseudo mode.

We would need to enable this when updater will become to use REST API.
Avoid errors and warnings in pseudo mode

In pseudo mode, errors and warnings produced by AdministrativeMonitor
should be disabled.
Merge pull request #131 from rinrinne/admin-monitor

Fix pseudo mode