VOL-1777 Update python requirements

Set the same across all projects to prevent
build errors.

Also bump SemVer to 0.2.1

Change-Id: I2b67bc06d7ae19e4c8a6e4a3192b784818ecd20b
diff --git a/VERSION b/VERSION
index a5fea60..0c62199 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.2.1-dev
+0.2.1