Add omniauth-github

Signed-off-by: Andrej Shadura <andrew.shadura@collabora.co.uk>

src/api/Gemfile

@@ -88,6 +88,7 @@ gem 'ajax-datatables-rails'
 # SSO
 gem 'omniauth'
 gem 'omniauth-gitlab'
+gem 'omniauth-github'
 gem 'omniauth_openid_connect', '~> 0.4.0'
 gem 'omniauth-rails_csrf_protection'
 

src/api/Gemfile.lock

@@ -298,6 +298,9 @@ GEM
       hashie (>= 3.4.6)
       rack (>= 1.6.2, < 3)
       rack-protection
+    omniauth-github (2.0.0)
+      omniauth (~> 2.0)
+      omniauth-oauth2 (~> 1.7.1)
     omniauth-gitlab (3.0.0)
       omniauth (~> 2.0)
       omniauth-oauth2 (~> 1.7.1)
@@ -624,6 +627,7 @@ DEPENDENCIES
   mysql2
   nokogiri
   omniauth
+  omniauth-github
   omniauth-gitlab
   omniauth-rails_csrf_protection
   omniauth_openid_connect