Move roles into a standard directory layout

This change adopts the same directory layout as tripleo-ansible[1]
in preparation for the metalsmith repo containing ansible plugins such
as modules.

Like in tripleo-ansible, the roles directory becomes a symlink to the
new roles location so that ansible can discover the role without
having to install.

[1] https://opendev.org/openstack/tripleo-ansible/src/branch/master/tripleo_ansible

Change-Id: I34114e653a0714cb5991672af1192e9fad95ea6b

doc/source/user/ansible.rst

@@ -1 +1 @@
-.. include:: ../../../roles/metalsmith_deployment/README.rst
+.. include:: ../../../metalsmith_ansible/roles/metalsmith_deployment/README.rst

roles

@@ -0,0 +1 @@
+metalsmith_ansible/roles

setup.cfg

@@ -26,7 +26,7 @@ packages =
     metalsmith
 
 data_files =
-    share/ansible/roles/metalsmith_deployment = roles/metalsmith_deployment/*
+    share/ansible/roles/ = metalsmith_ansible/roles/*
 
 [entry_points]
 console_scripts =

tox.ini

@@ -44,7 +44,7 @@ passenv = http_proxy HTTP_PROXY https_proxy HTTPS_PROXY no_proxy NO_PROXY \
 [testenv:pep8]
 commands =
     flake8 metalsmith
-    doc8 README.rst doc/source roles
+    doc8 README.rst doc/source metalsmith_ansible/roles
 
 [testenv:docs]
 deps =