[EOPS-5772] Implemented get, create, and destroy method on acky.ec2.ElasticIPCollection.
Added more documentation and fixed bugs.
Added more documentation and fixed bugs.
Removed excess docstring, added disassociate-address functionality for non-VPC instances.
Merge branch 'EOPS-5772' of github.com:JDong-rmn/acky into EOPS-5772

Conflicts:
	acky/ec2.py
Added associate an disassociate methods to acky.ec2.ElasticIPCollection.
changed IPvsAID validation.
Fixed code to meet standards.
fixed truthiness validation.