Add :special-members: directive to automodule in docs

This patch set adds :special-members: [0] directive to automodule
command in Patrole docs, in order to correctly render documentation
like [1] which is quite important. It won't show up without
this directive [2].

[0] http://www.sphinx-doc.org/en/master/usage/extensions/autodoc.html#directives
[1] https://github.com/openstack/patrole/blob/337a574ad88b9158a77d18548b6fe809e4c8f353/patrole_tempest_plugin/policy_authority.py#L37
[2] https://docs.openstack.org/patrole/latest/framework/policy_authority.html#module-patrole_tempest_plugin.policy_authority

Change-Id: I2a69f52e903f57cced3f5ace3ec6aab3620a4e63
diff --git a/doc/source/framework/policy_authority.rst b/doc/source/framework/policy_authority.rst
index 822c7b6..37b698c 100644
--- a/doc/source/framework/policy_authority.rst
+++ b/doc/source/framework/policy_authority.rst
@@ -60,3 +60,4 @@
 .. automodule:: patrole_tempest_plugin.policy_authority
    :members:
    :undoc-members:
+   :special-members:
diff --git a/doc/source/framework/rbac_authority.rst b/doc/source/framework/rbac_authority.rst
index 84c372b..40f2a8d 100644
--- a/doc/source/framework/rbac_authority.rst
+++ b/doc/source/framework/rbac_authority.rst
@@ -35,3 +35,4 @@
 .. automodule:: patrole_tempest_plugin.rbac_authority
    :members:
    :undoc-members:
+   :special-members:
diff --git a/doc/source/framework/rbac_utils.rst b/doc/source/framework/rbac_utils.rst
index 7143928..d0fe27e 100644
--- a/doc/source/framework/rbac_utils.rst
+++ b/doc/source/framework/rbac_utils.rst
@@ -176,3 +176,4 @@
 .. automodule:: patrole_tempest_plugin.rbac_utils
    :members:
    :private-members:
+   :special-members:
diff --git a/doc/source/framework/rbac_validation.rst b/doc/source/framework/rbac_validation.rst
index 186dfe2..6cd1534 100644
--- a/doc/source/framework/rbac_validation.rst
+++ b/doc/source/framework/rbac_validation.rst
@@ -17,3 +17,4 @@
 .. automodule:: patrole_tempest_plugin.rbac_rule_validation
    :members:
    :private-members:
+   :special-members:
diff --git a/doc/source/framework/requirements_authority.rst b/doc/source/framework/requirements_authority.rst
index 6c4fcc0..628f0c0 100644
--- a/doc/source/framework/requirements_authority.rst
+++ b/doc/source/framework/requirements_authority.rst
@@ -103,3 +103,4 @@
 .. automodule:: patrole_tempest_plugin.requirements_authority
    :members:
    :undoc-members:
+   :special-members: