Update ruby to 2.3.1

.rubocop.yml

@@ -1,6 +1,6 @@
 AllCops:
   DisplayCopNames: true
-  TargetRubyVersion: 2.1
+  TargetRubyVersion: 2.3
   Exclude:
     - vendor/**/*
     - gemfiles/**/*
@@ -40,6 +40,9 @@ Style/DoubleNegation:
     - 'libraries/helpers.rb'
     - 'recipes/_service.rb'
 
+Style/FrozenStringLiteralComment:
+  Enabled: false
+
 Style/GlobalVars:
   Exclude:
     - 'Rakefile'

.ruby-version

@@ -1 +1 @@
-2.1.6
+2.3.1

.travis.yml

@@ -5,7 +5,7 @@ services:
 cache:
   - bundler
 rvm:
-  - 2.1
+  - 2.3.1
 env:
   global:
     - KITCHEN_YAML=.kitchen.docker.yml
@@ -19,7 +19,7 @@ matrix:
   include:
     - sudo: false
       env: []
-      rvm: 2.1
+      rvm: 2.3.1
       script: bundle exec rake test
     - sudo: false
       env: []

Gemfile.lock

@@ -1,43 +1,46 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.3.6)
+    addressable (2.3.8)
     artifactory (2.3.3)
     ast (2.3.0)
-    berkshelf (3.1.3)
+    berkshelf (4.2.0)
       addressable (~> 2.3.4)
-      berkshelf-api-client (~> 1.2)
+      berkshelf-api-client (~> 2.0)
       buff-config (~> 1.0)
       buff-extensions (~> 1.0)
       buff-shell_out (~> 0.1)
-      celluloid (~> 0.16.0.pre)
-      celluloid-io (~> 0.16.0.pre)
+      celluloid (= 0.16.0)
+      celluloid-io (~> 0.16.1)
+      cleanroom (~> 1.0)
       faraday (~> 0.9.0)
+      httpclient (~> 2.6.0)
       minitar (~> 0.5.4)
-      octokit (~> 3.0)
-      retryable (~> 1.3.3)
-      ridley (~> 4.0)
-      solve (~> 1.1)
-      thor (~> 0.18)
-    berkshelf-api-client (1.2.0)
-      faraday (~> 0.9.0)
-    buff-config (1.0.0)
+      octokit (~> 4.0)
+      retryable (~> 2.0)
+      ridley (~> 4.3)
+      solve (~> 2.0)
+      thor (~> 0.19)
+    berkshelf-api-client (2.0.0)
+      faraday (~> 0.9.1)
+      httpclient (~> 2.6.0)
+    buff-config (1.0.1)
       buff-extensions (~> 1.0)
       varia_model (~> 0.4)
     buff-extensions (1.0.0)
-    buff-ignore (1.1.1)
+    buff-ignore (1.2.0)
     buff-ruby_engine (0.1.0)
-    buff-shell_out (0.1.1)
+    buff-shell_out (0.2.0)
       buff-ruby_engine (~> 0.1.0)
     busser (0.6.0)
       thor
     busser-serverspec (0.5.7)
       busser
-    celluloid (0.16.0.pre2)
-      timers (~> 3.0.0)
-    celluloid-io (0.16.0.pre2)
-      celluloid (>= 0.16.0.pre)
-      nio4r (>= 1.0.0)
+    celluloid (0.16.0)
+      timers (~> 4.0.0)
+    celluloid-io (0.16.2)
+      celluloid (>= 0.16.0)
+      nio4r (>= 1.1.0)
     chef (11.18.12)
       chef-zero (~> 2.2, >= 2.2.1)
       diff-lcs (~> 1.2, >= 1.2.4)
@@ -68,20 +71,17 @@ GEM
       chef (>= 11.14)
       fauxhai (~> 3.2)
       rspec (~> 3.0)
+    cleanroom (1.0.0)
     coderay (1.1.1)
     cucumber-core (1.5.0)
       gherkin (~> 4.0)
-    dep-selector-libgecode (1.0.2)
-    dep_selector (1.0.3)
-      dep-selector-libgecode (~> 1.0)
-      ffi (~> 1.9)
     diff-lcs (1.2.5)
     erubis (2.7.0)
-    faraday (0.9.0)
+    faraday (0.9.2)
       multipart-post (>= 1.2, < 3)
     fauxhai (3.8.0)
       net-ssh
-    ffi (1.9.3)
+    ffi (1.9.14)
     ffi-yajl (1.4.0)
       ffi (~> 1.5)
       libyajl2 (~> 1.2)
@@ -96,9 +96,10 @@ GEM
     gherkin (4.0.0)
     hashie (2.1.2)
     highline (1.7.8)
-    hitimes (1.2.1)
+    hitimes (1.2.4)
+    httpclient (2.6.0.1)
     ipaddress (0.8.3)
-    json (1.8.1)
+    json (2.0.2)
     kitchen-docker (2.4.0)
       test-kitchen (>= 1.0.0)
     kitchen-vagrant (0.20.0)
@@ -109,19 +110,19 @@ GEM
     mime-types (1.25.1)
     mini_portile2 (2.1.0)
     minitar (0.5.4)
-    mixlib-authentication (1.3.0)
+    mixlib-authentication (1.4.1)
       mixlib-log
     mixlib-cli (1.7.0)
     mixlib-config (2.2.1)
     mixlib-install (1.1.0)
       artifactory
       mixlib-shellout
       mixlib-versioning
-    mixlib-log (1.6.0)
+    mixlib-log (1.7.1)
     mixlib-shellout (1.6.1)
     mixlib-versioning (1.1.0)
+    molinillo (0.4.5)
     multipart-post (2.0.0)
-    net-http-persistent (2.9.4)
     net-scp (1.2.1)
       net-ssh (>= 2.6.5)
     net-ssh (2.9.2)
@@ -130,12 +131,12 @@ GEM
     net-ssh-multi (1.2.1)
       net-ssh (>= 2.6.5)
       net-ssh-gateway (>= 1.2.0)
-    nio4r (1.1.1)
+    nio4r (1.2.1)
     nokogiri (1.6.8)
       mini_portile2 (~> 2.1.0)
       pkg-config (~> 1.1.7)
-    octokit (3.2.0)
-      sawyer (~> 0.5.3)
+    octokit (4.4.1)
+      sawyer (~> 0.7.0, >= 0.5.3)
     ohai (7.4.1)
       ffi (~> 1.9)
       ffi-yajl (~> 1.1)
@@ -162,24 +163,24 @@ GEM
     rake (10.3.2)
     rest-client (1.6.7)
       mime-types (>= 1.16)
-    retryable (1.3.5)
-    ridley (4.0.0)
+    retryable (2.0.4)
+    ridley (4.4.1)
       addressable
       buff-config (~> 1.0)
       buff-extensions (~> 1.0)
       buff-ignore (~> 1.1)
       buff-shell_out (~> 0.1)
-      celluloid (~> 0.16.0.pre)
-      celluloid-io (~> 0.16.0.pre)
+      celluloid (~> 0.16.0)
+      celluloid-io (~> 0.16.1)
       erubis
       faraday (~> 0.9.0)
-      hashie (>= 2.0.2, < 3.0.0)
+      hashie (>= 2.0.2, < 4.0.0)
+      httpclient (~> 2.6)
       json (>= 1.7.7)
       mixlib-authentication (>= 1.3.0)
-      net-http-persistent (>= 2.8)
-      retryable
+      retryable (~> 2.0)
       semverse (~> 1.1)
-      varia_model (~> 0.4)
+      varia_model (~> 0.4.0)
     rspec (3.5.0)
       rspec-core (~> 3.5.0)
       rspec-expectations (~> 3.5.0)
@@ -202,13 +203,13 @@ GEM
     ruby-progressbar (1.8.1)
     rufus-lru (1.1.0)
     safe_yaml (1.0.4)
-    sawyer (0.5.4)
-      addressable (~> 2.3.5)
+    sawyer (0.7.0)
+      addressable (>= 2.3.5, < 2.5)
       faraday (~> 0.8, < 0.10)
-    semverse (1.1.0)
+    semverse (1.2.1)
     slop (3.6.0)
-    solve (1.2.0)
-      dep_selector (~> 1.0)
+    solve (2.0.3)
+      molinillo (~> 0.4.2)
       semverse (~> 1.1)
     stove (3.2.8)
       chef-api (~> 0.5)
@@ -222,14 +223,14 @@ GEM
       safe_yaml (~> 1.0)
       thor (~> 0.18)
     thor (0.19.1)
-    timers (3.0.1)
+    timers (4.0.4)
       hitimes
     treetop (1.6.8)
       polyglot (~> 0.3)
     unicode-display_width (1.1.0)
-    varia_model (0.4.0)
+    varia_model (0.4.1)
       buff-extensions (~> 1.0)
-      hashie (>= 2.0.2, < 3.0.0)
+      hashie (>= 2.0.2, < 4.0.0)
     wmi-lite (1.0.0)
     yajl-ruby (1.2.1)