Allow volume size and types to be optional

fix ignore ami

ignore ami_id

Allow specifying KMS Key for root volume

relax version constraint

Upgrade provider (#10)

* update license

* update ci

* relax versions

Merge pull request #9 from rhythmictech/ebs-support

Added EBS support

Gp3 support (#8)

* add iops/throughput volume settings

Merge pull request #6 from rhythmictech/optional-options

Optional SSM policy and SG

Optional SSM policy and SG