GRAILS-9162 - set Holders.servletContext to null after tests have run
GRAILS-9162 - problem with FieldError.code

Investigating why this fails on the build server.

errors['name'] should be a FieldError object so errors['name'].code should be valid.

GrailsMockErrors implements getAt(String) such that it returns the code, but GrailsMockErrors should not be in play for this test.

Still investigating.
debugging test failures on build server
Revert "GRAILS-9162 - problem with FieldError.code"

This reverts commit ee1b9893267df92ee9ba583c9c06d42f90e05722.

Conflicts:
	grails-test-suite-uber/src/test/groovy/grails/validation/ValidateableSpec.groovy
debugging build server test failure
fixing test failure on build server

I am still investigating why the getAt method isn't behaving the way that I expect it to behave.