Add omniauth-ldap as optional admin auth plugin.

Gemfile

@@ -65,6 +65,7 @@ gem "omniauth-facebook", "~> 2.0.0"
 # https://github.com/intridea/omniauth-github/pull/41
 gem "omniauth-github", :git => "https://github.com/riking/omniauth-github.git", :branch => "all_emails"
 gem "omniauth-google-oauth2", "~> 0.2.2"
+gem "omniauth-ldap", "~> 1.0.4"
 gem "omniauth-myusa", :git => "https://github.com/GSA-OCSIT/omniauth-myusa.git"
 gem "omniauth-persona", "~> 0.0.1"
 gem "omniauth-twitter", "~> 1.0.1"

Gemfile.lock

@@ -249,6 +249,7 @@ GEM
     multi_json (1.11.0)
     multi_xml (0.5.5)
     multipart-post (2.0.0)
+    net-ldap (0.3.1)
     net-scp (1.2.1)
       net-ssh (>= 2.6.5)
     net-ssh (2.9.2)
@@ -277,6 +278,11 @@ GEM
     omniauth-google-oauth2 (0.2.6)
       omniauth (> 1.0)
       omniauth-oauth2 (~> 1.1)
+    omniauth-ldap (1.0.4)
+      net-ldap (~> 0.3.1)
+      omniauth (~> 1.0)
+      pyu-ruby-sasl (~> 0.0.3.1)
+      rubyntlm (~> 0.1.1)
     omniauth-oauth (1.0.1)
       oauth
       omniauth (~> 1.0)
@@ -312,8 +318,11 @@ GEM
     psych (2.0.13)
     puma (2.11.2)
       rack (>= 1.1, < 2.0)
+    puma (2.11.2-java)
+      rack (>= 1.1, < 2.0)
     pundit (0.3.0)
       activesupport (>= 3.0.0)
+    pyu-ruby-sasl (0.0.3.3)
     rabl (0.11.6)
       activesupport (>= 2.3.14)
     rack (1.4.5)
@@ -432,6 +441,7 @@ GEM
       rainbow (>= 1.99.1, < 3.0)
       ruby-progressbar (~> 1.4)
     ruby-progressbar (1.7.5)
+    rubyntlm (0.1.1)
     safe_yaml (1.0.4)
     sass (3.2.19)
     sass-rails (3.2.6)
@@ -548,6 +558,7 @@ DEPENDENCIES
   omniauth-facebook (~> 2.0.0)
   omniauth-github!
   omniauth-google-oauth2 (~> 0.2.2)
+  omniauth-ldap (~> 1.0.4)
   omniauth-myusa!
   omniauth-persona (~> 0.0.1)
   omniauth-twitter (~> 1.0.1)