docs: Update configuration docs

This commit updates configuration docs. It also refactors the
index doc page to make it look more like Tempest's. The "readme"
file was removed from the docs as it's just a high-level project
overview.

The Developer's Guide section will be updated with contents included
in the "readme" in far greater detail in a follow-up commit.

Change-Id: I4d468b7f1bb6a000fde42d656635159176d5ef7f
diff --git a/doc/source/installation.rst b/doc/source/installation.rst
index 31f94f4..c244152 100644
--- a/doc/source/installation.rst
+++ b/doc/source/installation.rst
@@ -1,9 +1,11 @@
-============
-Installation
-============
+.. _patrole-installation:
 
-Installation Information
-========================
+==========================
+Patrole Installation Guide
+==========================
+
+Manual Installation Information
+===============================
 
 At the command line::
 
@@ -30,45 +32,3 @@
     ...
 
     enable_plugin patrole git://git.openstack.org/openstack/patrole
-
-Configuration Information
-=========================
-
-tempest.conf
-++++++++++++
-
-To run the RBAC tempest api test, you have to make the following changes to
-the tempest.conf file.
-
-#. ``auth`` section updates ::
-
-    # Allows test cases to create/destroy projects and users. This option
-    # requires that OpenStack Identity API admin credentials are known. If
-    # false, isolated test cases and parallel execution, can still be
-    # achieved configuring a list of test accounts (boolean value)
-    use_dynamic_credentials = True
-
-#. ``rbac`` section updates ::
-
-    # The role that you want the RBAC tests to use for RBAC testing
-    # This needs to be edited to run the test as a different role.
-    rbac_test_role = _member_
-
-    # Enables RBAC Tempest tests if set to True. Otherwise, they are
-    # skipped.
-    enable_rbac = True
-
-    # If set to true, tests throw a RbacParsingException for policies
-    # not found in the policy.json. Otherwise, they throw a
-    # skipException.
-    strict_policy_check = False
-
-    # The following config options set the location of the service's
-    # policy file. For services that have their policy in code (e.g.,
-    # Nova), this would be the location of a custom policy.json, if
-    # one exists.
-    cinder_policy_file = /etc/cinder/policy.json
-    glance_policy_file = /etc/glance/policy.json
-    keystone_policy_file = /etc/keystone/policy.json
-    neutron_policy_file = /etc/neutron/policy.json
-    nova_policy_file = /etc/nova/policy.json