[PATCH-for-5.0?] .github: Enable repo-lockdown bot to refuse GitHub pull requests

["Philippe Mathieu-Daudé" <f4bug@amsat.org>]

Some GitHub users try to open pull requests against the GitHub
mirror. Unfortunate these get ignored until eventually someone
notices and closes the request.

Enable the 'Repo Lockdown' [*] 3rd party bot which can autorespond
to pull requests with a friendly comment, close the request, and
then lock it to prevent further comments.

[*] https://github.com/dessant/repo-lockdown

Suggested-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
Repo Lockdown is enabled on https://github.com/qemu/qemu/
---
 .github/lockdown.yml | 35 +++++++++++++++++++++++++++++++++++
 MAINTAINERS          |  1 +
 2 files changed, 36 insertions(+)
 create mode 100644 .github/lockdown.yml

diff --git a/.github/lockdown.yml b/.github/lockdown.yml
new file mode 100644
index 0000000000..94472d1256
--- /dev/null
+++ b/.github/lockdown.yml
@@ -0,0 +1,35 @@
+# Configuration for Repo Lockdown - https://github.com/dessant/repo-lockdown
+
+# Close issues and pull requests
+close: true
+
+# Lock issues and pull requests
+lock: true
+
+issues:
+  comment: |
+    Thank you for your interest in the QEMU project.
+
+    This repository is a read-only mirror of the project's master
+    repostories hosted on https://git.qemu.org/git/qemu.git.
+    The project does not process issues filed on GitHub.
+
+    The project issues are tracked on Launchpad:
+    https://bugs.launchpad.net/qemu
+
+    QEMU welcomes bug report contributions. You can fill new ones on:
+    https://bugs.launchpad.net/qemu/+filebug
+
+pulls:
+  comment: |
+    Thank you for your interest in the QEMU project.
+
+    This repository is a read-only mirror of the project's master
+    repostories hosted on https://git.qemu.org/git/qemu.git.
+    The project does not process merge requests filed on GitHub.
+
+    QEMU welcomes contributions of code (either fixing bugs or adding new
+    functionality). However, we get a lot of patches, and so we have some
+    guidelines about submitting patches described in our Wiki:
+    https://wiki.qemu.org/Contribute/SubmitAPatch and
+    https://wiki.qemu.org/Contribute/FAQ
diff --git a/MAINTAINERS b/MAINTAINERS
index 9d156d73b3..0559e84790 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2833,6 +2833,7 @@ M: Alex Bennée <alex.bennee@linaro.org>
 M: Fam Zheng <fam@euphon.net>
 R: Philippe Mathieu-Daudé <philmd@redhat.com>
 S: Maintained
+F: .github/lockdown.yml
 F: .travis.yml
 F: scripts/travis/
 F: .shippable.yml
-- 
2.21.1