separate script to create obsw version file

scripts/create-version-file.sh

@@ -0,0 +1,7 @@
+#!/bin/bash
+obsw_version_filename="obsw_version.txt"
+version_cmd="git describe --tags --always --exclude docker_*"
+version_tag=$(${version_cmd})
+echo "-I- Running ${version_cmd} to retrieve OBSW version and store it into ${obsw_version_filename}"
+echo "-I- Detected version tag ${version_tag}"
+echo ${version_tag} > ${obsw_version_filename}