Add vpp-version file read by integration job

Specifies VPP version to use when publishing packages.

related ci-management commit: https://gerrit.fd.io/r/6458

Change-Id: I50c608b2788fb4b66c4b68e3ae8e985889420514
Signed-off-by: selias <[email protected]>

diff --git a/vpp-version b/vpp-version
new file mode 100755 (executable)
index 0000000..fea07c4
--- /dev/null
+++ b/vpp-version
@@ -0,0 +1,8 @@
+#!/bin/sh
+echo 'RELEASE'
+
+# Determines which VPP version to use in hc2vpp-integration job.
+# 'RELEASE' will use the latest VPP in the respective branch.
+# Alternatively use a specific VPP version.
+# Do not include the suffix ('_amd64', '.x86_64'), it will be appended.
+# Examples: '17.04-release', '17.07-rc0~151-g6bc8c64~b2254', ...