testsys: Use builder for EKS CRD creation

[ecpullen]

Previously there was a bug with the builder that prevented it from being used with for EKS crd creation. That bug was resolved in v0.0.5. The error type from the builder was also fixed, so snafu could be used.

Issue number:

N/A

Description of changes:

 testsys: Use `builder` for EKS CRD creation
    
    Previously there was a bug with the builder that prevented it from being
    used with for EKS crd creation. That bug was resolved in v0.0.5. The
    error type from the builder was also fixed, so snafu could be used.

Testing done:

cargo make test

 NAME                                 TYPE        STATE        PASSED    SKIPPED    FAILED   LAST UPDATE              BUILD ID
 x86-64-aws-k8s-124                   Resource    completed                                   2023-01-10T14:58:48Z    3ebb33a9
 x86-64-aws-k8s-124-instances-hdji    Resource    completed                                   2023-01-10T14:58:59Z    3ebb33a9
 x86-64-aws-k8s-124-test              Test        pass         1         6972       0         2023-01-10T15:00:32Z    3ebb33a9

Terms of contribution:

By submitting this pull request, I agree that this contribution is dual-licensed under the terms of both the Apache License, version 2.0, and the MIT license.

[stmcginnis]

Awesome!