Refactor ec2_vpc_peer* modules (ansible-collections#2153)

SUMMARY

Depends-On: ansible-collections#2303
Refactor ec2_vpc_peer* modules
Once the module is migrated to amazon.aws I will deprecate result returned by the info module and rename the ec2_vpc_peer module (see ansible-collections#2154).

ISSUE TYPE

Bugfix Pull Request
Docs Pull Request
Feature Pull Request
New Module Pull Request

COMPONENT NAME

ec2_vpc_peer
ec2_vpc_peering_info
ADDITIONAL INFORMATION

Reviewed-by: Bikouo Aubin
Reviewed-by: GomathiselviS
Reviewed-by: Alina Buzachis

This commit was initially merged in https://github.com/ansible-collections/community.aws
See: ansible-collections/community.aws@fcd780e