Merge pull request ansible-collections#563 from jillr/remove_shippable

Cleanup integration tests post-Zuul migration

SUMMARY
This collection has been operating on Zuul CI for some weeks now.

Remove shippable references
Use shorter unique_ids were resource_prefixes now exceed AWS resource length limits (zuul hostnames are longer than shippable was)
Cleanup for CI bugs surfaced in the course of this PR

ISSUE TYPE

Bugfix Pull Request

COMPONENT NAME
shippable.yml
tests/
README.md
NOT-Depends-On: ansible/ansible-zuul-jobs#978

Reviewed-by: Mark Chappell <None>
Reviewed-by: Jill R <None>

tests/integration/targets/ec2_vpc_igw/aliases

@@ -1,4 +1,3 @@
 cloud/aws
-shippable/aws/group2
 
 ec2_vpc_igw_info