Update CHANGELOG.md for 11.9.1

[ci skip]

CHANGELOG.md

@@ -2,6 +2,23 @@
 documentation](doc/development/changelog.md) for instructions on adding your own
 entry.
 
+## 11.9.1 (2019-03-25)
+
+### Fixed (7 changes)
+
+- Fix issue that caused the "Show all activity" button to appear on top of the mini pipeline status dropdown on the merge request page. !26274
+- Fix duplicated bottom match line on merge request parallel diff view. !26402
+- Allow users who can push to protected branches to create protected branches via CLI. !26413
+- Add missing .gitlab-ci.yml to Android template. !26415
+- Refresh commit count after repository head changes. !26473
+- Set proper default-branch for repository on GitHub Import. !26476
+- GitHub importer: Use the project creator to create branches from forks. !26510
+
+### Changed (1 change)
+
+- Upgrade to Gitaly v1.27.1. !26533
+
+
 ## 11.9.0 (2019-03-22)
 
 ### Security (24 changes)

changelogs/unreleased/58999-z-index-issue-on-pipeline-dropdown.yml

----
-title: Fix issue that caused the "Show all activity" button to appear on top of the
-  mini pipeline status dropdown on the merge request page
-merge_request: 26274
-author:
-type: fixed

changelogs/unreleased/59147-duplicate-match-line.yml

----
-title: Fix duplicated bottom match line on merge request parallel diff view
-merge_request: 26402
-author:
-type: fixed

changelogs/unreleased/59289-fix-push-to-create-protected-branches.yml

----
-title: Allow users who can push to protected branches to create protected branches
-  via CLI
-merge_request: 26413
-author:
-type: fixed

changelogs/unreleased/59293-android-template-is-missing-gitlab-ci-yml.yml

----
-title: Add missing .gitlab-ci.yml to Android template
-merge_request: 26415
-author:
-type: fixed

changelogs/unreleased/refresh-commit-count-after-head-change.yml

----
-title: Refresh commit count after repository head changes
-merge_request: 26473
-author:
-type: fixed

changelogs/unreleased/retain-default-branch-on-import.yml

----
-title: Set proper default-branch for repository on GitHub Import
-merge_request: 26476
-author:
-type: fixed

changelogs/unreleased/sh-fix-github-import-creator.yml

----
-title: 'GitHub importer: Use the project creator to create branches from forks'
-merge_request: 26510
-author:
-type: fixed