Unblock user if they were unblocked in AD.

CHANGELOG

@@ -60,7 +60,7 @@ v 7.9.0 (unreleased)
   - Remove annoying notice messages when create/update merge request
   - Allow smb:// links in Markdown text.
   - Filter merge request by title or description at Merge Requests page
-  - Block user if he/she was blocked in Active Directory
+  - Block and unblock user if he/she was blocked/unblocked in Active Directory
 
 v 7.8.4
   - Fix issue_tracker_id substitution in custom issue trackers

lib/gitlab/ldap/access.rb

@@ -40,6 +40,7 @@ module Gitlab
             user.block unless user.blocked?
             false
           else
+            user.activate if user.blocked?
             true
           end
         else

spec/lib/gitlab/ldap/access_spec.rb

@@ -28,9 +28,18 @@ describe Gitlab::LDAP::Access do
       end
 
       context 'and has no disabled flag in active diretory' do
-        before { Gitlab::LDAP::Person.stub(disabled_via_active_directory?: false) }
+        before do
+          user.block
+          
+          Gitlab::LDAP::Person.stub(disabled_via_active_directory?: false)
+        end
 
         it { is_expected.to be_truthy }
+
+        it "should unblock user in GitLab" do
+          access.allowed?
+          user.should_not be_blocked
+        end
       end
 
       context 'without ActiveDirectory enabled' do