Migrate bandit options to pyproject.toml

... so that these options can be used by different tools than
tox/pre-commit more easily.

Change-Id: I47528c30c03f19a7c28043f9cb6a610db8d5261e
Signed-off-by: Takashi Kajinami <kajinamit@oss.nttdata.com>

.pre-commit-config.yaml

@@ -21,7 +21,7 @@ repos:
     rev: 1.8.6
     hooks:
       - id: bandit
-        args: ['-x', 'tests', '-s', 'B311,B404,B603,B606']
+        args: ['-c', 'pyproject.toml']
   - repo: https://github.com/asottile/pyupgrade
     rev: v3.20.0
     hooks:

pyproject.toml

@@ -47,3 +47,7 @@ eventlet = [
 packages = [
     "oslo_concurrency"
 ]
+
+[tool.bandit]
+exclude_dirs = ["tests"]
+skips = ['B311', 'B404', 'B603', 'B606']