Use <project>_install_type instead of kolla_install_type
to set python_path. For example, general kolla_install_type
is 'binary', but user wants to deploy Horizon from 'source'.
Horizon templates still use python_path=/usr/share/openstack-dashboard,
it is wrong.

Change-Id: Ide6a24e17b1f8ab6506aa5e53f70693706830418

Since pbr 1.4.0, wsgi_scripts entrypoing is supported and it will
generated a wsgi compatible binary file.

Change-Id: I4192258226ec94b667913fd6fe099c4923145ea7

Disable ServerSignature and Hide apache related infromation.

Change-Id: I9188ddb85988539087c922117bb9f53454b7507c

They dropped the cloudkitty-api command line[0], so we should add wsgi
support for cloudkitty-api.

[0]https://review.openstack.org/#/c/366043/

Change-Id: Ie34d4f2d5c303bbd7ac09a8ab9e8d9bdc763c57b
Closes-Bug: #1713879