PROXY: Do not abuse data provider interface We want to use custom interface for proxy provider so we do not abuse the data provider one. This way we gain more control over it and we can remove the old interface entirely. Reviewed-by: Lukáš Slebodník <lslebodn@redhat.com>

DP: Switch to new interface Reviewed-by: Sumit Bose <sbose@redhat.com> Reviewed-by: Jakub Hrozek <jhrozek@redhat.com> Reviewed-by: Lukáš Slebodník <lslebodn@redhat.com>