fix previous commit by replacing two spaces with one tab

* the previous commit tried to fix the docker-push target, but failed to
  do so because instead of the required "tab" character, it added two
  spaces as indentation
* this commit replaces the two spaces with one tab character
* increase the VERSION to v3.4.8 to tag and publish a new artifact after
  fixing the docker-push target

Signed-off-by: Jan Klare <jan.klare@bisdn.de>
Change-Id: I52b422120637bd8fb84ab8525c8e6c007e2baaaf
diff --git a/VERSION b/VERSION
index 2aa5131..7921bd0 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-3.4.7
+3.4.8