Upgrade omniauth-ldap gem (and some dependencies)

Most notably, the net-ldap gem.

Gemfile

@@ -61,7 +61,7 @@ gem 'browser', '~> 2.2'
 # LDAP Auth
 # GitLab fork with several improvements to original library. For full list of changes
 # see https://github.com/intridea/omniauth-ldap/compare/master...gitlabhq:master
-gem 'gitlab_omniauth-ldap', '~> 1.2.1', require: 'omniauth-ldap'
+gem 'gitlab_omniauth-ldap', '~> 2.0.1', require: 'omniauth-ldap'
 
 # Git Wiki
 # Required manually in config/initializers/gollum.rb to control load order

Gemfile.lock

@@ -288,11 +288,11 @@ GEM
       mime-types (>= 1.16, < 3)
       posix-spawn (~> 0.3)
     gitlab-markup (1.5.1)
-    gitlab_omniauth-ldap (1.2.1)
-      net-ldap (~> 0.9)
-      omniauth (~> 1.0)
-      pyu-ruby-sasl (~> 0.0.3.1)
-      rubyntlm (~> 0.3)
+    gitlab_omniauth-ldap (2.0.1)
+      net-ldap (~> 0.16)
+      omniauth (~> 1.3)
+      pyu-ruby-sasl (>= 0.0.3.3, < 0.1)
+      rubyntlm (~> 0.5)
     globalid (0.3.7)
       activesupport (>= 4.1.0)
     gollum-grit_adapter (1.0.1)
@@ -471,7 +471,7 @@ GEM
     mustermann-grape (1.0.0)
       mustermann (~> 1.0.0)
     mysql2 (0.4.5)
-    net-ldap (0.12.1)
+    net-ldap (0.16.0)
     netrc (0.11.0)
     nokogiri (1.6.8.1)
       mini_portile2 (~> 2.1.0)
@@ -744,7 +744,7 @@ GEM
       nokogiri (>= 1.5.10)
     ruby_parser (3.9.0)
       sexp_processor (~> 4.1)
-    rubyntlm (0.5.2)
+    rubyntlm (0.6.2)
     rubypants (0.2.0)
     rubyzip (1.2.1)
     rufus-scheduler (3.4.0)
@@ -978,7 +978,7 @@ DEPENDENCIES
   github-linguist (~> 4.7.0)
   gitlab-flowdock-git-hook (~> 1.0.1)
   gitlab-markup (~> 1.5.1)
-  gitlab_omniauth-ldap (~> 1.2.1)
+  gitlab_omniauth-ldap (~> 2.0.1)
   gollum-lib (~> 4.2)
   gollum-rugged_adapter (~> 0.4.4)
   gon (~> 6.1.0)