Added API versioning backwards compability and tests.

Change-Id: I8a7b512bea67e07e449074a4d04c257b65ae1454
diff --git a/full/src/main/resources/kustvakt.conf b/full/src/main/resources/kustvakt.conf
index 0a1ddc3..3932b82 100644
--- a/full/src/main/resources/kustvakt.conf
+++ b/full/src/main/resources/kustvakt.conf
@@ -12,8 +12,9 @@
 ldap.config = file-path-to-ldap-config
 
 # Kustvakt
+current.api.version = v1.0
 # multiple versions separated by space
-supported.api.version = v0.1 v1.0
+supported.api.version = v1.0
 
 ## server
 server.port=8089