Testrunner: Handle case when test_info line exceeds console length

Case when invoked without verbose, testrunner will not print test_info
exceeding the width of the console. It will shrink down the test_name to
meet the requirement.

Test: Verified by locally running the test
Change-Id: Ibc8dff32e79818f7ac72322e5db01218343f3845
1 file changed