MODE-2070 fixed issues for Teiid DDL file w/ tables defined out of order that contain FK references

DDL can contain tables defined in any order like, In this use-case, TableA, TableB, TableC where TableA contains a FK reference to TableC. The reference to TableC (AstNode) cannot be resolved until TableC is parsed and the nodes constructed. 

Resolving these references is now handled properly in the Teiid CreateTableParser.postProcess() method.