Some of the SA tests which test some clhsdb commands don't use the ClhsdbLauncher for testing. Refactor these tests to use the ClhsdbLauncher for uniformity and easier maintainence. Also making modifications in the ClhsdbLauncher runCmd() method to test for regular expressions with shouldMatch rather than shouldContain. Modifying certain tests to check for regexs. Removing some unneeded imports too.