Cleaned up references to executor specific RPCServer types

In oslo.messaging design phase, it was planned to introduce executor
specific RPCServer types though they were never implemented. References
to those types sneaked into docstrings from the original design
document. Since we're not going to implement those types now, docstrings
should be updated accordingly.

Change-Id: Ic4017bb8f89d47115bb7dc59483e81d26c76212b
Add an example usage of RPCClient retry parameter

Change-Id: Ib88870b312721deff0d9b6db2ba2e3cb99da6038
Fix the notify method of the routing notifier

The notify method of the routing notifier don't have the correct
signature and change the case of the priority.

This change fixes it.

Change-Id: I833b19d0c054c94b861a4f6cc263c3487fa0e544
Closes-bug: #1316681
Add check credentials to log message if rabbmitmq closes socket

If one has the credentials misconfigured for rabbitmq currently the following
error message is shown: "AMQP server on 10.0.0.23:5672 is unreachable:
Socket closed. Trying again in 1 seconds. " This is confusing because the
problem is the login creditentials are wrong but the server can be reached.

Since the rabbmitmq server allowed the initial connection and closed the
socket it's likely an authenication issue. This patch now logs: "AMQP server
10.0.0.23:5672 closed the connection. Check login credentials: Socket closed"
to hint the user that it could be a credential issue.

Change-Id: Iadff35d88a9cf704c1edd2d5036a113966db3ea3
Closes-bug: 1325750
Merge "Add check credentials to log message if rabbmitmq closes socket"
Merge "Fix the notify method of the routing notifier"
Updated from global requirements

Change-Id: I71fd4b1292d68279d75569dc022745b75da66eab
Disable connection pool in qpid interfaces tests

This change disables the connection pool in qpid interfaces tests to
ensure that each tests are isolated.

Closes bug: #1331459

Change-Id: Ib4a49be9f605dda5f2cbcbade3851345866e5797
Transport reconnection retries for notification

This patch add support of reconnection retries for the
messaging notifier.

Related bug #1282639
Change-Id: Ia30331f8306ff0f6952d83ef42ff8bee6b900427
Merge "Add an example usage of RPCClient retry parameter"
Merge "Cleaned up references to executor specific RPCServer types"
Merge "Disable connection pool in qpid interfaces tests"
Merge "Transport reconnection retries for notification"