This change includes:
1. defined base exception classe for user visible error
and non user visible errors (all others exceptions)
2. exception hook to handle exception during processing requests with
proper user information preparation
An error signature is a few bytes from hash of stack trace of an
exception.
Corresponding client code change will be in separated commit.
Story: 2010676
Task: 49519
Test Cases:
Pass: unhandled exception will not fail the service.
Pass: raise SoftwareServiceError exception on server side, correct
response sends to the client side
Pass: raise None SoftwareServiceError exception (any exception),
correct response sends to the client side.
Change-Id: Ib44eed3261891c4cc3d1931a6f7e2cb707e89b9c
Signed-off-by: Bin Qian <bin.qian@windriver.com>
e8ed7f2412