Merge branch 'sh-bump-omniauth-gitlab' into 'master'

Bump omniauth-gitlab to 1.0.2 to fix incompatibility with omniauth-oauth2

As noted in gitlab-com/support-forum#1270, omniauth-gitlab fails if omniauth-oauth2 is bumped to 1.4.0, OAuth2 quietly fails due to https://github.com/linchus/omniauth-gitlab/issues/10:

```
21:26:04 rails-web.1             | I, [2016-11-07T21:26:04.245007 #56637]  INFO -- omniauth: (gitlab) Callback phase initiated.
21:26:05 rails-web.1             | E, [2016-11-07T21:26:05.068009 #56637] ERROR -- omniauth: (gitlab) Authentication failure! invalid_credentials: OAuth2::Error, invalid_grant: The provided authorization grant is invalid, expired, revoked, does not match the redirection URI used in the authorization request, or was issued to another client.
```

This was fixed and discussed here: 
* https://github.com/linchus/omniauth-gitlab/commit/26c47e55396205fab8439363c98136d0fde797f3
* https://github.com/linchus/omniauth-gitlab/issues/10

Bumping this version to 1.0.2 will ensure future compatibility.

See merge request !7348

Gemfile

@@ -26,7 +26,7 @@ gem 'omniauth-bitbucket',     '~> 0.0.2'
 gem 'omniauth-cas3',          '~> 1.1.2'
 gem 'omniauth-facebook',      '~> 4.0.0'
 gem 'omniauth-github',        '~> 1.1.1'
-gem 'omniauth-gitlab',        '~> 1.0.0'
+gem 'omniauth-gitlab',        '~> 1.0.2'
 gem 'omniauth-google-oauth2', '~> 0.4.1'
 gem 'omniauth-kerberos',      '~> 0.3.0', group: :kerberos
 gem 'omniauth-saml',          '~> 1.7.0'

Gemfile.lock

@@ -456,7 +456,7 @@ GEM
     omniauth-github (1.1.2)
       omniauth (~> 1.0)
       omniauth-oauth2 (~> 1.1)
-    omniauth-gitlab (1.0.1)
+    omniauth-gitlab (1.0.2)
       omniauth (~> 1.0)
       omniauth-oauth2 (~> 1.0)
     omniauth-google-oauth2 (0.4.1)
@@ -913,7 +913,7 @@ DEPENDENCIES
   omniauth-cas3 (~> 1.1.2)
   omniauth-facebook (~> 4.0.0)
   omniauth-github (~> 1.1.1)
-  omniauth-gitlab (~> 1.0.0)
+  omniauth-gitlab (~> 1.0.2)
   omniauth-google-oauth2 (~> 0.4.1)
   omniauth-kerberos (~> 0.3.0)
   omniauth-saml (~> 1.7.0)

changelogs/unreleased/sh-bump-omniauth-gitlab.yml

+---
+title: Bump omniauth-gitlab to 1.0.2 to fix incompatibility with omniauth-oauth2
+merge_request: 
+author: