Add top-level lint/fmt tox jobs

This is to add a top-level lint/fmt job to Pegleg so that tox -e lint
is executed in CICD. lint is included under envlist to accomplish this.
fmt is excluded from envlist as it doesn't need to be executed in CICD
but is included nonetheless for convenience.

Also fixes some typos.

Change-Id: I76165704b32653c98e506ddde71c8240d5f28492

src/bin/pegleg/pegleg/engine/lint.py

@@ -41,8 +41,8 @@ DECKHAND_SCHEMAS = {
 def full(fail_on_missing_sub_src=False, exclude_lint=None, warn_lint=None):
     messages = []
     # If policy is cleartext and error is added this will put
-    # that particular message into the warns list and all other will
-    # be added to the error list if SCHMEA_STORAGE_POLICY_MITCHMATCH_FLAG
+    # that particular message into the warns list and all others will
+    # be added to the error list if SCHEMA_STORAGE_POLICY_MISMATCH_FLAG
     messages.extend(_verify_file_contents())
 
     # Deckhand Rendering completes without error
@@ -160,14 +160,13 @@ def _verify_document(document, schemas, filename):
 
 
 def _verify_deckhand_render(fail_on_missing_sub_src=False):
-
     documents = []
 
     for filename in util.files.all():
         with open(filename) as f:
             documents.extend(list(yaml.safe_load_all(f)))
 
-    rendered_documents, errors = util.deckhand.deckhand_render(
+    _, errors = util.deckhand.deckhand_render(
         documents=documents,
         fail_on_missing_sub_src=fail_on_missing_sub_src,
         validate=True,

src/bin/pegleg/tests/unit/test_engine_util_files.py

@@ -16,6 +16,7 @@ import tempfile
 from pegleg import config
 from pegleg.engine.util import files
 
+
 def test_no_non_yamls(tmpdir):
     p = tmpdir.mkdir("site_yamls").mkdir("global")
     for x in range(3):  # Create 3 YAML files
@@ -25,6 +26,6 @@ def test_no_non_yamls(tmpdir):
     results = list(files.all())
 
     assert 3 == len(results)
-    # make sure only YAML files are returned
+    # Make sure only YAML files are returned
     for i in results:
         assert i.endswith('.yaml')

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py35, docs
+envlist = py35, lint, docs
 # Allows docs to be built without setup.py having to exist. Requires that
 # usedevelop be False as well (which it is by default).
 skipsdist = True
@@ -15,6 +15,16 @@ commands =
     tox -c src/bin/pegleg/tox.ini -e py35
 whitelist_externals = tox
 
+[testenv:fmt]
+commands =
+    tox -c src/bin/pegleg/tox.ini -e fmt
+whitelist_externals = tox
+
+[testenv:lint]
+commands =
+    tox -c src/bin/pegleg/tox.ini -e lint
+whitelist_externals = tox
+
 [testenv:docs]
 deps = -r{toxinidir}/docs/requirements.txt
 commands =