Recommands to setup cloudkitty through an other WSGI services
like Apache 'mod_wsgi'. And the community has set a community wide goal
in Pike cycle: "Control Plane API endpoints deployment via WSGI"
https://governance.openstack.org/tc/goals/pike/deploy-api-in-wsgi.html
Work Item: Add WSGI support
1. Provide WSGI application script file.
2. Removing the cloudkitty-api command line.
3. Adding cloudkitty-api wsgi_scripts, by 'cloudkitty-api -p 8889' to run.
Work Item: Make the devstack setup ck-api with wsgi
1. Switch devstack jobs to deploy control-plane API services in WSGI with Apache.
2. Default to deploy with Apache by global ENABLE_HTTPD_MOD_WSGI_SERVICES, in
local.conf expose CLOUDKITTY_USE_MOD_WSGI=False to run without Apache.
Work Item: Update the docs about installation
1. Installing the cloudkitty-api behind mod_wsgi.
2. Updating the installation about the cloudkitty-api.
Implements: blueprint wsgi-support
Change-Id: I207587c5360bb80c0e856cd0239e4073578951aa
2dc80310ba