Fix the abusefilter array parser test

The abusefilter array test failed because length( ['a', 'b', 'c'] )
returned 12 instead of 6. That was du to it converted the array
to a string with new line seperated values first before measuring
the string length. Changed that behaviour to act like the php count()
function or the python len() function which seems far more useful to me.
The old behaviour can be established using length( string( array ) ).

Change-Id: I16646891837c9743ca5af2dd328077a7225bb5f1
Merge "Fix the abusefilter array parser test"