Merge branch 'update-gitlab-git' into 'master'

Update gitlab_git to 10.6.6

## What does this MR do?

This updates gitlab_git to version 10.6.6

## Are there points in the code the reviewer needs to double check?

No.

## Why was this MR needed?

10.6.4/10.6.5/10.6.6 contains some changes regarding marking blobs as binary, this can improve page loading times.

## Does this MR meet the acceptance criteria?

- [x] ~~[CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added~~
- Tests
  - [ ] All builds are passing
- [x] Conform by the [merge request performance guides](http://docs.gitlab.com/ce/development/merge_request_performance_guidelines.html)
- [x] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] Branch has no merge conflicts with `master` (if you do - rebase it please)
- [x] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

## What are the relevant issue numbers?

Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/22144

See merge request !6279

1 files changed, 20 insertions, 0 deletions

diff --git a/spec/models/blob_spec.rb b/spec/models/blob_spec.rb
index cee20234e1f..03d02b4d382 100644
--- a/spec/models/blob_spec.rb
+++ b/spec/models/blob_spec.rb
@@ -1,3 +1,4 @@
+# encoding: utf-8
 require 'rails_helper'
 
 describe Blob do
@@ -7,6 +8,25 @@ describe Blob do
     end
   end
 
+  describe '#data' do
+    context 'using a binary blob' do
+      it 'returns the data as-is' do
+        data = "\n\xFF\xB9\xC3"
+        blob = described_class.new(double(binary?: true, data: data))
+
+        expect(blob.data).to eq(data)
+      end
+    end
+
+    context 'using a text blob' do
+      it 'converts the data to UTF-8' do
+        blob = described_class.new(double(binary?: false, data: "\n\xFF\xB9\xC3"))
+
+        expect(blob.data).to eq("\n���")
+      end
+    end
+  end
+
   describe '#svg?' do
     it 'is falsey when not text' do
       git_blob = double(text?: false)