* pkg awsutils

* pkg ec2wrapper: add func to describe subnets

* pkg ipamd: handle primary ENI exclusion

* test: add integration test

* pkg: enable subnet discovery for IPv6 mode

* test integration eni-subnet-discovery: extend tests for IPv6 mode

* pkg: use shared context for awsutils and ipamd

* pkg awsutils: fix compilation error

* pkg ipamd: clean up ENI if not previously used

* pkg ipamd: gracefully exclude primary ENI if existing pods

* test integration: add integration test for primary ENI exclusion

* pkg ipamd: fix bug when calculating currentENIs when primary ENI is excluded

* pkg ipamd: implement secondary ENI exclusion logic

* pkg ipamd: add unit test for secondary ENI exclusion

* test integration: add integ test for secondary ENI exclusion testing

* test integration: add test for security group refresh

* rebase to latest mainline chnages

* remove value check for tags

* reviewed

* updated based on comments

* add more unit tests

* primary ENI can't be easily ignored

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Co-authored-by: Shehbaj Dhillon <dshehbaj@amazon.com>