authentication with avatica

[RestfulBlue]

Hey guys, we have been using avatica jdbc driver for some external system which supports data pull from jdbc. Everything was great but lately we have discovered an issue with auth.
When we was using druid 0.10-0.12 ( not sure which version was that) we was using avatica url connection like this :

jdbc:avatica:remote:url=http://host:port/druid/v2/sql/avatica/;authentication=BASIC;avatica_user=test;avatica_password=test

And this was working fine. Lately we have tried to use that way with a later releases ( 0.14.2+) and we always get authentication failed :(

It looks like now login and password should be set on jdbc connection(instead of url), will it be stable api or it can be changed in future? which way of authentication is preferable? releases of that external system are really slow and it takes about 4 months to make even a little change :(