Adding SnapshotLock Capabilities

[mdzraf]

What type of PR is this?

/kind feature

What is this PR about? / Why do we need it?

This PR adds the ability for users to lock snapshots on creation by passing in desired LockSnapshot parameters through the VolumeSnapshotClass.

How was this change tested?

Ran various unit tests as well as e2e tests that:

• Created locked snapshots in governance mode
• Create locked snapshots in compliance mode
• Create locked snapshots with FSR

Also manually tested by running a modified version of our snapshot example.

• In the examples/kubernetes/snapshot Change snapshotclass.yaml to:

apiVersion: snapshot.storage.k8s.io/v1
kind: VolumeSnapshotClass
metadata:
  name: csi-aws-vsc
driver: ebs.csi.aws.com
deletionPolicy: Delete
parameters: 
  snapshotLockEnabled: "true"
  snapshotLockMode: "governance"
  snapshotLockDuration: "1"

• Run through example, and just make sure to unlock snapshot through AWS CLI before doing cleanup by running:

aws ec2 unlock-snapshot --snapshot-id  snap-<snapshot-id>

Does this PR introduce a user-facing change?

Added Ability To Lock Snapshots On Creation Through VolumeSnapshotClass Parameters. 

[k8s-ci-robot]

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[github-actions]

Code Coverage Diff

This PR does not change the code coverage

[ConnorJC3]

/retest

[mdzraf]

/hold

Waiting on managed policy change.

[torredil]

/lgtm