Fix i18n messages in novaclient, part I

This change make all the text visible by the user i18n. The
messages changes are in prints, logs, exceptions, helps, etc
Pep8 errors about "Multiple positional placeholders" also fixed

Change-Id: I731afea790baddbc34d059b93a35e3d275fc1df8
Fixed multi validation and wrong fail calls in unit tests

* Positive test was calling the same check several times. Replaced
  with one call.
* Negative test was failing with "'object has no attribute 'assertFail'"
  error message in case of failure. Replaced with appropriate message.

Change-Id: Id03a452f7735d6b4d13f54036f1bd3ae50cb487a
[UT] Removed duplicate key from dict in fake baremetal_node

Python takes only the last value if several keys with the
same name listed. Removed the first one to make value evident.

Change-Id: I6cef783ff245073b4c0fde0e4d60ff69fb02fc22
[UT] Fixed floating_ip_pools fake return to expected one

It seems that author wanted to return two pools. But because of typo,
method now returns only one of them. Fixed typo to return two pools.

Change-Id: Ia77a8529fd4db1b06860073ebf33bd54b43438cd
Fix Serivce class AttributeError

When we str(service_object), an AttributeError occurred like this:
========================
  File "/opt/stack/python-novaclient/novaclient/v1_1/services.py", line
24, in __repr__
    return "<Service: %s>" % self.service
  File
"/opt/stack/python-novaclient/novaclient/openstack/common/apiclient/base.py",
 line 463, in __getattr__
    raise AttributeError(k)
AttributeError: service
========================
This commit fixes it.

Change-Id: I496d522591273bf1b1e7dbadf19afaf5e64e41e3
Closes-Bug: #1276408
Update my mailmap

Using new email address.

Change-Id: Ib2303680e6219b4fb8bdd67c016b14dd515d6d05
Fixed polling after boot in shell

+ Added unit test to test that poll method is called.
  Testing of poll method itself is out of this CR scope.

Change-Id: I57adb80bacd76b0831ea63f74182f60a2033ab11
Merge "Fixed polling after boot in shell"
Merge "Update my mailmap"
Merge "Fix Serivce class AttributeError"
Merge "[UT] Fixed floating_ip_pools fake return to expected one"
Merge "Fixed multi validation and wrong fail calls in unit tests"
Merge "Fix i18n messages in novaclient, part I"
Merge "[UT] Removed duplicate key from dict in fake baremetal_node"