* Add osprofiler wsgi middleware. This middleware is used for 2 things:
1) It checks that person who wants to trace is trusted and knows
secret HMAC key.
2) It starts tracing in case of proper trace headers
and adds first wsgi trace point, with info about HTTP request
* Add initialization of osprofiler at start of service
Currently that includes oslo.messaging notifer instance creation
to send Ceilometer backend notifications.
Neutron client change: Ic11796889075b2a0e589b70398fc4d4ed6f3ef7c
Co-authored-by: Ryan Moats <rmoats@us.ibm.com>
Depends-On: I5102eb46a7a377eca31375a0d64951ba1fdd035d
Closes-Bug: #1335640
DocImpact Add devref and operator documentation on how to use this
APIImpact
Change-Id: I7fa2ad57dc5763ce72cba6945ebcadef2188e8bd