added bash scripts:
bin/ec2-tg-info
bin/ec2-tg-register
bin/ec2-tg-deregister
added shell functions in .profile.d/elbv2_functions.sh:
ec2-instance-tags
ec2-metadata-tags
elb-lb-list-arn
elb-tg-list-arn
elb-lb-show-tags
elb-tg-show-tags
elb-lb-list-for-instance
added functions to .profile.d/ssm_functions.sh
ssm-path-from-tags