codecov_helper: Add logging for each codecov report produced

It seems that this stage takes a lot of time and has zero output,
literally, Jenkin job just hangs for hours. Have some logging to
have insight what's happening.

Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
Change-Id: I4a80c70c5e9b27ab5550d152dd1f5c9a787001cc
1 file changed