Upgrade cinder to juno

Had to add a whole new keystoneauth section for new options.

api-paste updates
  sync with upstream
  clean up keystone middleware for correct options

refresh policy.json from upstream
Upgrade nova to juno

Required a glance and neutron section for associated configs.
Required a keystone_authtoken for renamed settings.
Removed image_service, has been gone since 2012
Update api-paste to match upstream
  v3 and v21 paths.
  request ID logging
  Updated keystone authtoken argument for identity_uri
  (http://www.jamielennox.net/blog/2014/05/21/identity-uri-in-auth-token-middleware/)
Disable vif plugging fatality for now and shorten the timeout
  notifications aren't working for now, fix this up later
Neutron juno upgrade

Updated keystone options.

update api-paste from upstream
  Also use keystone middleware identity_uri

refresh policy from upstream
Upgrade percona to 5.6

A neutron migration will crash 5.5
sst method upgraded to v2. Previous version does not work.