Open Stack

The PKI token change introduced an unnecessary change to the database 
table for tokens.  I'd like to revert it to the layout that exists in 
Essex.  To that end,  I'd like to:

1.  Remove the id_hash column
2.  Change the id column to  sql.Column(sql.String(64), primary_key=True)
3.  Stop persisting the PKI token body in the table.

The changes to do this are minimal.  Is this an acceptable change to 
push through between now and the Folsom release?  Including the tokens 
and the extra columns in the database long term will likely cause trouble.