Ensure we name configuration dependencies with this little bomb.
Use real puts & deletes in test.

Turns out to be a little terser.
ChangeCoprocessor filters incoming events by touched columns.

A whitelist of columns is required in the coprocessor declaration line, as in:

... "coprocessor" => '|moz.meerkat.hbase.ChangeCoprocessor|1001|col0=f:q,col1=f2'

The intent here is to filter out events that merely ack previous real mutations.  It also may be useful when multiple change spouts are listening to the same table, for different sets of columns.