SSMParameterReadPolicy should include ssm:GetParametersByPath

[studds]

Description:

The SSMParameterReadPolicy does not include ssm:GetParametersByPath

Expected result:

It would be useful to include ssm:GetParametersByPath in SSMParameterReadPolicy.

[jlhood]

@studds Totally agree. Thanks so much for bringing this up. This would be a very quick PR for anyone who wants to contribute the change. Update the permissions here, then fix failing unit tests to match the new policy template.

[ShreyaGangishetty]

Closing this issue as v1.15.0 is released