Stein fixes

- Switch to Stein release
- Cookstyle fixes
- Update cookbook etcd to ~> 5.6
- Update README
- Add myself to author list and OSU Copyright
- Properly fix completions recipe and ensure it works
- Create and start the etcd service in the etcd recipe
- Update delivery configuration to exclude integration cookbooks
- Refactor and update RenderConfigFileMatcher to work with newer
  ChefSpec. This fixes output which was passing but showing error
  messages.

Depends-On: https://review.opendev.org/701027
Change-Id: Iba3eeabe85ab9303147e43eeb550212a46d190f3

.rubocop_todo.yml

@@ -1,6 +1,6 @@
 # This configuration was generated by
 # `rubocop --auto-gen-config`
-# on 2018-08-03 05:25:49 -0700 using RuboCop version 0.55.0.
+# on 2020-02-05 22:58:21 +0000 using RuboCop version 0.75.1.
 # The point is for the user to remove these configuration records
 # one by one as the offenses are removed from the code base.
 # Note that changes in the inspected code, or installation of new
@@ -11,22 +11,9 @@ Lint/NestedMethodDefinition:
   Exclude:
     - 'libraries/matchers.rb'
 
-# Offense count: 2
-# Cop supports --auto-correct.
-Lint/UnneededCopEnableDirective:
-  Exclude:
-    - 'libraries/matchers.rb'
-
-# Offense count: 2
-# Cop supports --auto-correct.
-Style/IfUnlessModifier:
-  Exclude:
-    - 'Rakefile'
-    - 'libraries/matchers.rb'
-
 # Offense count: 1
 # Cop supports --auto-correct.
-# Configuration parameters: AutoCorrect, EnforcedStyle.
+# Configuration parameters: AutoCorrect, EnforcedStyle, IgnoredMethods.
 # SupportedStyles: predicate, comparison
 Style/NumericPredicate:
   Exclude:
@@ -38,9 +25,3 @@ Style/NumericPredicate:
 Style/ZeroLengthPredicate:
   Exclude:
     - 'libraries/provider_database_mysql_user.rb'
-
-# Offense count: 178
-# Configuration parameters: AllowHeredoc, AllowURI, URISchemes, IgnoreCopDirectives, IgnoredPatterns.
-# URISchemes: http, https
-Metrics/LineLength:
-  Max: 168