Update oslo-incubator log module
Update oslo-incubator log module

Changes -
 * default connectionpool to WARN log level
 * Backport 'ident' from python 3.3 for Oslo's SysLogHandler
 * remove extra newlines that eventlet seems to add
 * Small edits on help strings
 * Add error type to unhandled exception log message
 * Logging excepthook: print exception info if debug=True
 * Fix spelling errors in comments

Change-Id: I94038cfe875dea27640ae58a598e2692a529dd80

redhat-openstack/sahara,esikachev/sahara-backup,tellesnobrega/storm_plugin,xme1226/sahara,keedio/sahara,zhangjunli177/sahara,henaras/sahara,egafford/sahara,xme1226/sahara,crobby/sahara,zhangjunli177/sahara,henaras/sahara,bigfootproject/sahara,tellesnobrega/storm_plugin,bigfootproject/sahara,egafford/sahara,ekasitk/sahara,crobby/sahara,matips/iosr-2015,esikachev/scenario,esikachev/scenario,openstack/sahara,bigfootproject/sahara,tellesnobrega/sahara,zhujzhuo/Sahara,mapr/sahara,crobby/sahara,zhujzhuo/Sahara,ekasitk/sahara,citrix-openstack-build/sahara,citrix-openstack-build/sahara,citrix-openstack-build/sahara,ekasitk/sahara,mapr/sahara,esikachev/sahara-backup,mapr/sahara,matips/iosr-2015,esikachev/scenario,tellesnobrega/sahara,openstack/sahara,xme1226/sahara,keedio/sahara,redhat-openstack/sahara,esikachev/sahara-backup,tellesnobrega/storm_plugin,zhujzhuo/Sahara,zhangjunli177/sahara,matips/iosr-2015,redhat-openstack/sahara,keedio/sahara,henaras/sahara