lisa.tests.base: Widen the scope of usage of CannotCreateError
lisa.tests.base: Widen the scope of usage of CannotCreateError

Document that it can also be raised when we failed to create a ResultBundle for
similar reasons than what would prevent the creation of a TestBundle.

credp/lisa,ARM-software/lisa,credp/lisa,ARM-software/lisa,ARM-software/lisa,ARM-software/lisa,credp/lisa,credp/lisa