Since internationalization should be enabled in Watcher CLI/SDK,
this patchset refactors the watcherclient codebase to wrap
previously untranslatable strings with i18n translation functions
so we can import them for translation into the .pot template file.
Change-Id: Ibb987e66b95e009e33b596add8c96ecb193a3773
Implements: blueprint support-translation
Most of librairies available under openstack/common folder are
now deployed by using oslo dedicated package. So we can remove
them and point to new python package.
Moreover, According to the November agreement in Oslo team,
apiclient and clituils will be removed from Oslo incubator.
We should keep the local copy by ourselfs
Change-Id: I3abc09d1c512df1f5cb868ed462a7900260705ce
Implements: blueprint make-watcherclient-use-graduated-oslo-lib
