Update maven repo to https

From Jan 15, 2020 Maven Central Repository no longer supports HTTP and requires that all requests to the repository are encrypted over HTTPS.
https://support.sonatype.com/hc/en-us/articles/360041287334

Also start 2.2.2-dev

Change-Id: Ic90eefb7eae0bdc8280cb244d1a1d3bc9f03224f
diff --git a/VERSION b/VERSION
index c043eea..97102b4 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.2.1
+2.2.2-dev