feat:improve iac test json output

[rontalx]

What does this PR do?

Formats and improves the response we get from Registry's iac-test for use in our JSON output.
Main changes:

• Rename cloudConfigResults -> infrastructureAsCodeIssues
• Rename cloudConfigPath -> path
• Remove the following fields: from, name
• Improved names & typings.
• Reduce tons of boilerplate code in the relevant iac test and clean them up.

old structure

"cloudConfigResults": [
  {
      "id": "SNYK-CC-K8S-15",
      "from": [],
      "title": "LoadBalancer Service without SourceRange allows all traffic",
      "description": "...",
      "type": "k8s",
      "subType": "Service",
      "name": "LoadBalancer Service without SourceRange allows all traffic",
      "severity": "medium",
      "cloudConfigPath": [
        "[DocId: 3]",
        "service",
        "spec",
        "loadBalancerSourceRanges"
      ],
      "isIgnored": false
    }
]

new structure

"infrastructureAsCodeIssues": [
  {
      "id": "SNYK-CC-K8S-15",
      "title": "LoadBalancer Service without SourceRange allows all traffic",
      "description": "...",
      "type": "k8s",
      "subType": "Service",
      "severity": "medium",
      "path": [
        "[DocId: 3]",
        "service",
        "spec",
        "loadBalancerSourceRanges"
      ],
      "isIgnored": false
    }
]

Note
There's a refactor I did for the test structure.
there's more to do, but for the sake of releasing this PR I'm pushing it to a separate task.

How should this be manually tested?

Running the iac-test flows both with and without the --json flag.

Any background context you want to provide?

Slack Discussion: https://snyk.slack.com/archives/CMM9V3XPY/p1596616315051300

What are the relevant tickets?

Jira Ticket: https://snyksec.atlassian.net/browse/CC-257