include some vendored dependencies in ship version

[laverya]

What I Did

Added helm, kustomize and terraform versions to the ship version command - see #915

How I Did it

For now, these versions are hardcoded as part of the build scripts - this should be updated in the future

How to verify it

run ship version and observe the output:

{
    "version": "v0.40.0-10-gf22ebeeb",
    "git": "f22ebee",
    "buildTime": "2019-04-19T18:24:38Z",
    "dependencies": {
        "helm": "v2.13.0",
        "kustomize": "v2.0.2",
        "terraform": "v0.11.13"
    }
}

Description for the Changelog

ship version includes the versions of some dependencies

Picture of a Ship (not required but encouraged)