LOG-1503: Feature Request: Add tag support to configure-syslog.py

[bobziuchkovski]

We use the configure-syslog.py script in conjunction with AWS VPC NAT instances. The NAT instances use CloudFormation init support to retrieve and execute the configure-syslog.py script.

Since we use this across multiple CloudFormation stacks, it would be very nice if the configure-syslog.py script were enhanced to support tags via a CLI switch, and update the syslog template config file accordingly.