feuGeneA and shin- aws ec2 preqreq check: match error to filter
filter to search for a subnet searches by both regionZone and VpcId,
but when no matches were found, the error message neglected to mention
that the VPC ID was part of the search criteria

Signed-off-by: F. Eugene Aumson <feuGeneA@github.com>
Latest commit dccdee0 Jul 10, 2018