tsdf.select("*") throws Exception stating columns must be present when they are by nature of the projection

[R7L208]

Current behavior produces the below Exception:
Exception: In TSDF's select statement original ts_col, partitionCols and seq_col_stub(optional) must be present

However by nature of select("*") they will be present in the data frame if they exist

Expected Behavior

tsdf.select("*") should succeed and return all columns, including those defined for ts_col, partitionCols, and seqCol

[tnixon]

This is a tricky one that'll take some thought as to how to deal with...
We want to support all the types of expressions that you could use within a select, but understanding which ones will modify the structure of a TSDF such that we should issue an exception and which won't is non-trivial.