Fix vulnerability aggregation bug
Fix vulnerability aggregation bug

This commit fixes a bug where the line number attribute was erroneously
being recorded as 'line' rather that 'lineno' when reporting with
aggregation by vulnerability.

Change-Id: Ic9e546336cea8fb62a5968793c98a8751c2fc383
Closes-Bug: #1432890

stackforge/bandit,pombredanne/bandit,austin987/bandit,chair6/bandit,stackforge/bandit,pombredanne/bandit