Added DescribeDBParameterGroups and DeleteDBParameterGroup RDS APIs
Added ModifyDBParameterGroup RDS API support
Added DescribeDBParameters RDS API support
Added support for the optional Source parameter for the DescribeDBParameters RDS API
Fixed incorrect XML path to the DBParameterGroupName which was causing instances to get recreated
Fixed bug with describing DB instances that use VPC security groups
Added missing test assertion for pulling out the DBParameterGroupName during a db instance describe
Update route53.go
AWS instance resource now supports tenancy
fixed the xml hierarchy
adding support for s3 service resource, only supports Buckets response element

Signed-off-by: Peter Ellis Jones <pete@peterellisjones.com>
ec2: Implement GetConsoleOutput
Add ELB attributes

Needed to enable Cross-zone loadbalancing so added ability to set elb attributes
Checks certain attributes before including in params so not all need to be set
elb: fix spelling error
elb: fix failing test

cc/ @mitchellh I'm doing this XML parsing properly,
right.
Added a missing field to the DBSecurityGroup struct

I’m refactoring the TF AWS provider and would like to use this field to
update the TF config with this info.
implemented CreateNetworkAcl
implemented CreateNetworkAclEntry
Implementec Describe network ACL
renamed DescribeNetworkAcls to NetworkAcls