Add withTextIgnoreCase, use it to verify file root message

[labkey-chrisj]

Rationale

Locally I've experienced issues setting a pipeline file root, the problem is that the test waits for a labkeyMessage with case-sensitive text notifying the user that the pipeline root was set to a particular path- this adds a withTextIgnoreCase overload to Locators to accompany existing startsWithIgnoreCase and containsIgnoreCase, and uses it to verify in a case-insensitive way that the specified path was set.

Related Pull Requests

n/a

Changes

• add Locator.withTextIgnoreCase
• use it to verify setPipelineRoot

[labkey-tchad]

This is just the same as containingIgnoreCase.