Reduce logging level and prevent runaway exception logging - i.e. Caused by a rogue client that keeps attempting a bad call.
TODO - Currently limiting to 10 logged errors at warning level, but really need to have a timer reset after a certain period.
Prevent service start if stop has already been called - Rare case where the server needs to be killed aggressively during a startup, for example due to a bad configuration.
Finals.

git-svn-id: https://svn.apache.org/repos/asf/tomee/tomee/trunk@1468065 13f79535-47bb-0310-9956-ffa450edef68