modified Name Field and reduced sleep time

[cho00013]

4 major changes on the code.

1. Name field logic to handle multiple cases (Name has fqdn, Name only hostname + zone name, Name only hostname + vpc dhcp dns zone name). See the top of the script for more info.
2. Changed the sleep time to perform some instance lookup and while look until max sleep if instance doesn't return values.
3. Added is_valid_zone function to re-use.
4. Added additional "sleep" timer to reduce Route 53 API limit (5 per sec). I also reduced the amount of API's which were duplicate. Also, added random 10 or 20 seconds sleep timer to reduce the probability of API limit.

Route 53 SDK will auto-retry up to 5 times, however, by adding random up to 10 seconds (running) or up to 20 seconds (terminate/stop) will spread out the calls if multiple instances are launched OR terminated/stopped. Testing performed up to 30 instance started/stopped.

[badra001]

What is this? I don't see DFAState anywhere within the code changes.

[cho00013]

@badra001 - strange I did see that, and I thought I removed. Not sure how it got there, but it can come out.

[badra001]

OK