clearinghouse initializes multiple times

[tcmitchell]

After the WSGI fix we are still seeing a handful of initialization log messages per restart of httpd:

After a restart at 10:45 a.m.:

01/24/2017 10:45:33:INFO    :chapi:CH_SERVER: INITIALIZED CH_SERVER
01/24/2017 10:45:34:INFO    :chapi:CH_SERVER: INITIALIZED CH_SERVER
01/24/2017 10:46:47:INFO    :chapi:CH_SERVER: INITIALIZED CH_SERVER

Googling for "wsgi one time global initialization" found a response by Graham Dumpleton, the WSGI developer:

http://stackoverflow.com/questions/6221851/loading-a-file-just-once-on-initialization-of-python-script-using-mod-wsgi-and-b

Determine if this needs to be addressed. If it does need to be addressed, use mock-ch to experiment with solutions.

[tcmitchell]

This is fixed by:

• One time initialization can happen multiple times geni-ch#542
• Move one-time initialization to WSGI files geni-ch#543