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: Icd2a9bded756b2bcba1fb7da6abe48503fd9b2d6
Signed-off-by: Moisés Guimarães de Medeiros <moguimar@redhat.com>

1 files changed, 4 insertions, 3 deletions

diff --git a/tools/oslo_run_pre_release_tests b/tools/oslo_run_pre_release_tests
index 4fc0d5c..378a0db 100755
--- a/tools/oslo_run_pre_release_tests
+++ b/tools/oslo_run_pre_release_tests
@@ -26,8 +26,7 @@ import pkg_resources
 
 
 def find_all_projects(repo_root):
-    """Scan the checked out repositories for all available projects.
-    """
+    """Scan the checked out repositories for all available projects."""
     pattern = os.path.join(repo_root, 'openstack/*')
     candidates = glob.glob(pattern)
     prefix_len = len(repo_root)
@@ -39,7 +38,9 @@ def find_all_projects(repo_root):
 
 
 def find_consuming_projects(lib_name, repo_root, projects):
-    """Filter the list of projects to only include entries that use the library.
+    """Filter the list of projects
+
+    Filter the list of projects to only include entries that use the library.
     """
     for p in projects:
         consumer = False