Adding Jenkinsfile for automatic release builds.

Successful automated-builds trigger this Jenkinsfile build (multi branch pipeline)
which asks whether to continue (times out after 12h). Then this tags existing
branches with RC tag, builds and publishes ONOS apps, emails discuss list with
announcement of new RC available with repo command to get it and list of
commits which have been addressed.

Change-Id: I01b7c316bcaf646640e546a58ffde9dfe828acfe
diff --git a/Jenkinsfile b/Jenkinsfile
new file mode 100644
index 0000000..15651e4
--- /dev/null
+++ b/Jenkinsfile
@@ -0,0 +1,9 @@
+node ('host-master') {
+    input id: 'Release-build', message: 'Should I perform a release?', parameters: [booleanParam(defaultValue: true, description: 'Build and release onos applications', name: 'build-onos-apps'), string(defaultValue: '', description: '', name: 'release-version')], submitter: 'ash'
+
+
+
+    println params.release-version
+    println params.build-onos-apps
+}
+