don't export okhttp packages

Change-Id: Iac75ff2e32268482346c264d036a3cf434ef464c
Signed-off-by: Igor Fedorenko <igor@ifedorenko.com>
444039 extract throwable using logback API

Change-Id: Ia469ac07b241a1286e6afdd51f80d2b810c89615
Signed-off-by: Igor Fedorenko <igor@ifedorenko.com>