Enhanced Defender license warnings for policy groups 2 and 4

[Dylan-MITRE]

🗣 Description

Add licenses check for policy groups 2 and 4 in addition to the current check, make the report details more precise. And let user be more aware of the missing licenses.

💭 Motivation and context

closes #599

🧪 Testing

Run Scuba for Defender
Change the json file mainly "defender_license" to "false"
Run Scuba for Defender again
Will see warning about Defender license missing during the run
Will see notes on reports indicates license missing

Note: the check for policy group 2 and 4 will still pass or fail based on the environment setting because we are modifying the json file from an tenant with required licenses. The result is still be accurate based on the environment information. Note that, normally it will fail if they don't have license due to missing information from the provider JSON.

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[schrolla]

The licensing relationship to policy group 4, particularly 4.2 is a bit more granular and tricky than just adding a warning. This might require some additional thinking about how best to report status on a policy item that contains a mix of both license required and non-license required items. Technically, without the license a tenant cannot meet the requirement, but without details about specific locations the admin doesn't have sufficient feedback to determine if the issue is due to license, DLP policy config, or a combination of both. See full comments below.

[schrolla]

Getting closer, but recommend additional code to better delineate which locations are not meeting the baseline rather than a generic message. See comments below.

[Dylan-MITRE]

Also added fix for powershell bugs #976

[buidav]

Functionally works great.
Biggest issue is to fix the new dlp_license key naming.

[buidav]

Looks good!

[schrolla]

@nanda-katikaneni This PR is ready for merge.