Cleans the acceptance tests results directory (#1015)
Cleans the acceptance tests results directory (#1015)

* Cleans the acceptance tests results directory before tests are run.

emanlove/robotframework-selenium2library,rtomac/robotframework-selenium2library,robotframework/SeleniumLibrary,emanlove/robotframework-selenium2library,emanlove/robotframework-selenium2library,robotframework/SeleniumLibrary,rtomac/robotframework-selenium2library,robotframework/SeleniumLibrary,rtomac/robotframework-selenium2library