Add IMDSv2 support

[jas-sendSafely]

The template is older and does not take into account IMDSv2

The following needs to be updated

~line 447 TOKEN=curl -X PUT "http://169.254.169.254/latest/api/token" -H "X-aws-ec2-metadata-token-ttl-seconds: 21600" region=curl -H "X-aws-ec2-metadata-token: $TOKEN" --silent http://169.254.169.254/latest/dynamic/instance-identity/document | grep region | cut -f 4 -d '"'instanceId=curl -H "X-aws-ec2-metadata-token: $TOKEN" --silent http://169.254.169.254/latest/meta-data/instance-id``

and line ~628 TOKEN=curl -X PUT "http://169.254.169.254/latest/api/token" -H "X-aws-ec2-metadata-token-ttl-seconds: 21600" aws ec2 associate-address --region ${AWS::Region} --instance-id $(curl -H "X-aws-ec2-metadata-token: $TOKEN" -s http://169.254.169.254/latest/meta-data/instance-id) --allocation-id $freeEIP --allow-reassociation || error_exit 'Failed to Associate Elastic IP'