Modify Sharepoint policies to only execute when applicable (#1076)

* create consolidated method for getting sharepoint slider setting; begin rewriting unit tests

* add test cases to test against N/A cases where external sharing is not set to Anyone; add standard baseline check

* build at baseline test to match against new unit tests

* Complete new rego evaluation for sharepoint 3.1, modify existing rulesets, and adjust unit tests

* clean up, add comments

* modify functional test harness for sharepoint 3.1

* modify pnp functional tests

* update naming conventions for unit tests

* rename unit tests; refactor PolicyNotApplicable3_1 so that it can be reused for policies 3.2 / 3.3

* add N/A case for Sharepoint 3.2

* modify sharepoint 3.2 to check not applicable case, add unit tests to test for N/A

* modify unit tests for sharepoint 3.3; refactor ExpirationTimersVerificationCode() fnc to VerificationCodeReAuthExpiration fnc; handle not applicable case

* had to adjust which SharingCapability settings are applied in sharepoint 3.3

* in current state all unit tests pass

* refactor NA check into CheckPolicyNotApplicable fnc

* adjust sharepoint 3.3 NA results to include existing guests

* update functional tests cases for sharepoint 3.3 spo

* update pnp functional tests for sharepoint 3.3; all tests pass

* fix yaml linter

* change sharepoint 3.2 to check View as condition

* modify sharepoint 1.3 to take into account N/A case; modify unit tests to reflect change

* complete functional testing for sharepoint 1.3 for both spo/pnp variants

* clean up code

* fix 1.4

* fix unit tests

* update functional tests

* add missing unit tests

* update bad test titles

* improve test coverage

* remove unecessary settings in functional tests

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Co-authored-by: Sloane4 <[email protected]>