Update expected value in notify_spec

Prevent test failures when Gitlab is configured to use a port other than
80.
Filters issues by milestone via API
Remove def project from tests that inherit it.
Prevent notes polling when there are not notes
Replace Gitlab::Git::GitStats

The `GitStats` class has been removed from gitlab_git, so parse commits
directly in `Repository#graph_log`.
Merge pull request #7889 from cirosantilli/rm-def-project

Remove def project from tests that inherit it.
Merge pull request #7870 from mr-vinn/fix-notify-spec

Update expected value in notify_spec
Remove notice that it hasn't been released yet.
Rename the speed upgrade file.
Bump gitlab_git version

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Fix contributors api

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Merge branch 'prevent_notes_polling' into 'master'

Prevent notes polling when there are not notes

See merge request !1132
Merge branch 'fix-network-graph' into 'master'

Fix network graph

Fix #1624

See merge request !1135
Merge branch 'api/issues-filter-milestone' of https://github.com/jubianchi/gitlabhq into jubianchi-api/issues-filter-milestone

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Conflicts:
	CHANGELOG
Merge branch 'jubianchi-api/issues-filter-milestone'
Merge pull request #7906 from mr-vinn/fix-graph-log

Replace Gitlab::Git::GitStats
Update email templates for email on push service with links to commit and repository.
Add a 'region' to the backup upload connection
Consolidate the IAM backup upload policy
Add region to backup upload config in gitlab.yml