[Changed] made the spawn event for the old man persistent.
[Changed] the time for the old man spawn to 12 minutes instead of 12
seconds. Still the time is for testing.

Change-Id: I82cfd0611d438caad9efca72ab6317fc558baa80
Merge "[Changed] made the spawn event for the old man persistent. [Changed] the time for the old man spawn to 12 minutes instead of 12 seconds. Still the time is for testing." into unstable