key.password implies key.auth=BASIC

[apetro]

When an endpoint.properties configuration declares .password with a non-blank value, consider .auth to be BASIC unless .auth is present with some other non-blank value.

This would make rest-proxy backwards compatible as regards endpoint.properties configurations of BASIC-authenticated usages for rest-proxy 2.1.4. Backwards-compatibility is much to be desired within the 2 major version series.