Adding pre-commit

Introduced changes:
- pre-commit config and rules
- Add pre-commit to pep8 gate, Flake8 is covered in the pre-commit hooks.
- Applying fixes for pre-commit compliance in all code.

Also commit hash will be used instead of version tags in pre-commit to
prevend arbitrary code from running in developer's machines.

pre-commit will be used to:
- trailing whitespace;
- Replaces or checks mixed line ending (mixed-line-ending);
- Forbid files which have a UTF-8 byte-order marker (check-byte-order-marker);
- Checks that non-binary executables have a proper
  shebang (check-executables-have-shebangs);
- Check for files that contain merge conflict strings (check-merge-conflict);
- Check for debugger imports and py37+ breakpoint()
  calls in python source (debug-statements);
- Attempts to load all yaml files to verify syntax (check-yaml);
- Run flake8 checks (flake8) (local)

For further details about tests please refer to:
https://github.com/pre-commit/pre-commit-hooks

Change-Id: Ifc5ee35d399c628604ec1644eb447936803c45f5
Signed-off-by: Moisés Guimarães de Medeiros <moguimar@redhat.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/doc/source/configuration/index.rst b/doc/source/configuration/index.rst
index 6ca076e..0a2a4ec 100644
--- a/doc/source/configuration/index.rst
+++ b/doc/source/configuration/index.rst
@@ -3,7 +3,7 @@ Middlewares and configuration
 =============================
 
 Middlewares can be configured in multiple fashion depending of the
-application needs. Here is some use-cases: 
+application needs. Here is some use-cases:
 
 Configuration from the application
 ----------------------------------
@@ -24,8 +24,8 @@ The paste filter (in /etc/my_app/api-paste.ini) will looks like::
 
     [filter:sizelimit]
     use = egg:oslo.middleware#sizelimit
-    # In case of the application doesn't use the global oslo.config 
-    # object. The middleware must known the app name to load 
+    # In case of the application doesn't use the global oslo.config
+    # object. The middleware must known the app name to load
     # the application configuration, by setting this:
     #  oslo_config_project = my_app