Add make target "docs" to create current branch

We've been seeing issues with sphinx-multiversion not building the
docs with the imported repos. sphinx-build still works as expected,
and we don't have a very strong need for multiversion builds.

Signed-off-by: Eric Ball <eball@linuxfoundation.org>
Change-Id: Iab726bb365970a58746204980b21d595232204ba
diff --git a/VERSION b/VERSION
index 94f15e9..0e83a9a 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.13.1
+2.13.2