ITestAssumeRole.testAssumeRoleBadInnerAuth failure

failure of test ITestAssumeRole.testAssumeRoleBadInnerAuth where a failure was expected, but the error text was wrong.

Either STS has changed its error text or something is changing where the failure happens.

Given the nature of the test, it may be simplest to keep the expectation of an FS init faiure, but remove the text match