oeqa/core/runner: OEStreamLogger don't buffer test execution writes
Since OEQA framework uses Python logging functionality to report test
results there is a class that wraps PyUnit writes into logging commands
(OEStreamLogger), so don't buffer the actual test execution to have
insight of what is currently executing.
This fix will change a little the test output format adding an '\n'
previous the test result, for example:
From:
test_nonmatching_checksum (lic_checksum.LicenseTests) ... ok
To:
test_nonmatching_checksum (lic_checksum.LicenseTests)
... ok
This is because the new line added by the PyUnit StreamLogger because
currently we don't have a manner to identify when a test execution
starts at report level (write msg).
[YOCTO #11827]
Signed-off-by: Aníbal Limón <anibal.limon@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>