[MONDRIAN-2010] Fixed schema validation check, Mondrian automatically sets
the key attribute to single attribute dimensions.
[MONDRIAN-2010] fixed AccessControlTest.testUnionRole(), with the removal
of Access.RESTRICTED in Lagunitas, Another approach was necessary for
unioning of HiearchyAccess.hasInaccessibleDescendants()
Merge pull request #319 from wgorman/lagunitas

Lagunitas Test Fixes