Fixed so that all out put from the shell-tests end up in test/unitests/test-output/test-results.txt.
Fixed so that all out put from the shell-tests end up in test/unitests/test-output/test-results.txt.

splunk/splunk-shuttl,splunk/splunk-shuttl,splunk/splunk-shuttl,splunk/splunk-shuttl,splunk/splunk-shuttl,splunk/splunk-shuttl