Add Route53 ID customization to Botocore.

This change moves and adds to the customization [currently in the AWS CLI]
(https://github.com/aws/aws-cli/blob/develop/awscli/customizations/route53resourceid.py)
that handles automatically splitting Route53 resource IDs.

For example, `/hostedzone/ABC123` will be changed to just `ABC123` when
used as input to a Route53 service operation. The `Id`, `HostedZoneId`,
`ResourceId`, and `DelegationSetId` input parameters are all handled by
this customization. We do not need to handle `HealthCheckId` because the
format is different and as such it doesn't have this issue.

This fixes an issue encountered in boto/boto3#28.

A corresponding change will need to be made to the AWS CLI to remove the
customizations there after this is merged in.

cc @jamesls, @kyleknap