DCD-224: Misc. minor cleanups.

roles/linux_common/tasks/amazon.yml

@@ -1,6 +1,6 @@
 ---
 
-- name: Install Redhat family support packages
+- name: Install Amazon-Linux-specific support packages
   yum:
     name:
       - shadow-utils

roles/linux_common/tasks/main.yml

@@ -5,7 +5,7 @@
 - name: Install distro-specific prerequisites
   include: "{{ ansible_distribution|lower }}.yml"
 
-- name: Install common support packags
+- name: Install common support packages
   package:
     name:
       - jq

roles/product_base/molecule/default/tests/test_default.py

@@ -22,6 +22,7 @@ def test_dirs_created(host, target):
     assert d.is_directory
     assert d.user == 'testuser'
 
+
 @pytest.mark.parametrize('target', [
     '/usr/bin/git',
     '/usr/bin/psql',