Merge pull request openshift#10494 from sdodson/pr-template

Add pull request template

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,26 @@
+TEMPLATE
+========
+The pull request title should be one line summary that completes the sentence
+"If merged, this change will ..."
+
+PR Description should explain why the change is necessary and reasoning
+behind the chosen implementation. If this is a backport please include a
+link to the upstream PR. If this is related to a bugzilla please include a
+link to the bugzilla.
+
+Update the description throughout the life of the pull request so that it
+is accurate at all times.
+
+
+MASTER is 4.0
+======
+There is a branch for each major release, ex: release-3.11, release-3.10.
+The master branch tracks the current development work. At this time that
+is 4.x. Due to the scope of the changes involved in 4.0 it is likely that
+any change targetting 3.x will not be relevant to the master branch.
+
+PRs for 3.x releases should be opened directly against the latest release
+that they are relevant to and then backported once accepted.
+
+
+