Merge remote-tracking branch 'apahim/remove_eggs'

Signed-off-by: NCleber Rosa <crosa@redhat.com>

Makefile

@@ -138,6 +138,7 @@ clean:
 	rm -rf /var/tmp/avocado*
 	rm -rf /tmp/avocado*
 	find . -name '*.pyc' -delete
+	find $(AVOCADO_OPTIONAL_PLUGINS) -name '*.egg-info' -exec rm -r {} +
 
 pip:
 	$(PYTHON) -m pip --version || $(PYTHON) -c "import os; import sys; import urllib; f = urllib.urlretrieve('https://bootstrap.pypa.io/get-pip.py')[0]; os.system('%s %s' % (sys.executable, f))"