[docs] Fix weird indentation in documentation

This commit fixes weird indentations in the documentation. And this
commit also adds auto generated file `patrole.conf.sample` to
.gitignore because we don't need to manage it in a git repository.

Change-Id: Ic6816ad04675917bf81c9d172b09feb5f40a2829
diff --git a/patrole_tempest_plugin/rbac_rule_validation.py b/patrole_tempest_plugin/rbac_rule_validation.py
index fc8b145..75d1baa 100644
--- a/patrole_tempest_plugin/rbac_rule_validation.py
+++ b/patrole_tempest_plugin/rbac_rule_validation.py
@@ -43,15 +43,15 @@
 
     A decorator which allows for positive and negative RBAC testing. Given:
 
-        * an OpenStack service,
-        * a policy action (``rule``) enforced by that service, and
-        * the test role defined by ``[patrole] rbac_test_role``
+    * an OpenStack service,
+    * a policy action (``rule``) enforced by that service, and
+    * the test role defined by ``[patrole] rbac_test_role``
 
     determines whether the test role has sufficient permissions to perform an
     API call that enforces the ``rule``.
 
     This decorator should only be applied to an instance or subclass of
-        ``tempest.test.BaseTestCase``.
+    ``tempest.test.BaseTestCase``.
 
     The result from ``_is_authorized`` is used to determine the *expected*
     test result. The *actual* test result is determined by running the
@@ -306,14 +306,14 @@
     Before being formatted, "extra_target_data" is a dictionary that maps a
     policy string like "trust.trustor_user_id" to a nested list of
     ``tempest.test.BaseTestCase`` attributes. For example, the attribute list
-    in:
+    in::
 
-        "trust.trustor_user_id": "os.auth_provider.credentials.user_id"
+      "trust.trustor_user_id": "os.auth_provider.credentials.user_id"
 
     is parsed by iteratively calling ``getattr`` until the value of "user_id"
-    is resolved. The resulting dictionary returns:
+    is resolved. The resulting dictionary returns::
 
-        "trust.trustor_user_id": "the user_id of the `os_primary` credential"
+      "trust.trustor_user_id": "the user_id of the `os_primary` credential"
 
     :param test_obj: An instance or subclass of ``tempest.test.BaseTestCase``.
     :param extra_target_data: Dictionary, keyed with ``oslo.policy`` generic