Move config-generator to tools

Moving this out of cinder/ separates it from the
actual run-time Cinder code.

Change-Id: I056f40120fdef60a0dc1a5926729748fd2835938

doc/source/conf.py

@@ -63,7 +63,7 @@ extensions = ['sphinx.ext.autodoc',
               ]
 
 config_generator_config_file = (
-    '../../cinder/config/cinder-config-generator.conf')
+    '../../tools/config/cinder-config-generator.conf')
 sample_config_basename = '_static/cinder'
 
 # autodoc generation is a bit aggressive and a nuisance

tox.ini

@@ -81,12 +81,12 @@ commands =
 [testenv:genconfig]
 sitepackages = False
 envdir = {toxworkdir}/pep8
-commands = oslo-config-generator --config-file=cinder/config/cinder-config-generator.conf
+commands = oslo-config-generator --config-file=tools/config/cinder-config-generator.conf
 
 [testenv:genopts]
 sitepackages = False
 envdir = {toxworkdir}/pep8
-commands = python cinder/config/generate_cinder_opts.py
+commands = python tools/config/generate_cinder_opts.py
 
 [testenv:venv]
 commands = {posargs}