github: add pull request template

For now it just asks for a Redmine ticket URL. We can use this to link
Suricata-Verify pull requests to Suricata features and pull requests,
potentially creating a script to update S-V pull requests when the
ticket status changes, or a Suricata pull request has been merged.

diff --git a/.github/pull_request_template.md b/.github/pull_request_template.md
new file mode 100644 (file)
index 0000000..8dc4d2f
--- /dev/null
+++ b/.github/pull_request_template.md
@@ -0,0 +1,8 @@
+
+## Ticket
+
+If your pull request is related to a Suricata ticket, please provide
+the full URL to the ticket here so this pull request can monitor
+changes to the ticket status:
+
+Redmine ticket: