Validate versionlocks

[cartermckinnon]

Issue #, if available:

#1193

Description of changes:

Adds some validation on kernel versionlocks, since multiple locks can lead to unexpected behavior.

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

Testing Done

Succeeds:

> make 1.25
...
2023-03-06T13:02:56-08:00: ==> amazon-ebs: Provisioning with shell script: awslabs/amazon-eks-ami/scripts/validate.sh
2023-03-06T13:02:57-08:00:     amazon-ebs: Verifying that kernel version 5.10.167-147.601.amzn2.x86_64 matches ...
2023-03-06T13:02:57-08:00:     amazon-ebs: Kernel matches expected version!
2023-03-06T13:02:57-08:00:     amazon-ebs: Verifying that the package versionlocks are correct...
2023-03-06T13:02:57-08:00:     amazon-ebs: Package versionlocks are correct!

Fails (as expected):

> git checkout 8b10a76977278e7afec85b51c326d17392565fd6
> curl -L https://github.com/awslabs/amazon-eks-ami/pull/1195.patch | git apply
> make 1.24
...
2023-03-06T13:28:35-08:00: ==> amazon-ebs: Provisioning with shell script: awslabs/amazon-eks-ami/scripts/validate.sh
2023-03-06T13:28:35-08:00:     amazon-ebs: Verifying that kernel version 5.10.167-147.601.amzn2.x86_64 matches ...
2023-03-06T13:28:35-08:00:     amazon-ebs: Kernel matches expected version!
2023-03-06T13:28:35-08:00:     amazon-ebs: Verifying that the package versionlocks are correct...
2023-03-06T13:28:36-08:00:     amazon-ebs: There is no package matching the versionlock entry: 'kernel-4.14.305-227.531.amzn2.*'
2023-03-06T13:28:36-08:00: ==> amazon-ebs: Provisioning step had errors: Running the cleanup provisioner, if present...

[mmerkes]

Did you validate that this works with the problematic AMI? As in, it would have failed.

[cartermckinnon]

Yep! Updated the PR description.