Fixes in devel for Vicky; copying to multdim
 - Update sample config file with all the things it needs (I think)
 - Updated crawl.py to 1) complain if 'crawl fire' does not have -p, 2) report
   the name of the plugin not found in the config if that's the case, 3)
   remove duplicate crl_pw_encode(), crl_pw_decode().

Change-Id: I9cebae05ba07100ced70ec2b7f6f38ad79fe5821
Better error messages for 'crawl fire'
 - Better message in crawl.py for missing -p on 'crawl fire'
 - Better message in crawl.py for plugin named on 'crawl fire' not being in
   the config file
 - Tests for these cases

Change-Id: I5fe685143151b3e7d0176d627a2e6c652ee6663c