Allow multiple rules per policy

[hi-artem]

Description

As mentioned in #12, there is certain limitations in the current policy resources - they can only be created with 1 rule per policy.

The following PR adds logic to allow multiple rules per policy, by iterating over the rules as the policies are getting parsed. I didn't change core logic of how policies are getting parsed, and all the changes are scoped to adding the iteration element.

I updated one of the examples to showcase the policy with multiple rules.

Motivation and Context

Need to have multiple rules per policy.

How Has This Been Tested?

Manually tested on self-hosted Prisma Cloud Compute 21.04 running Terraform with various combination of rules.

Types of changes

• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• [ ] I have updated the documentation accordingly.
• [ ] I have read the CONTRIBUTING document.
• [ ] I have added tests to cover my changes if appropriate.
• [ ] All new and existing tests passed.

[welcome-to-palo-alto-networks[bot]]

:tada: Thanks for opening this pull request! We really appreciate contributors like you! :raised_hands:

[wfg]

@hi-artem I also tested your changes, and it does what it says on the tin. Thanks for taking the time to contribute to this project.

[welcome-to-palo-alto-networks[bot]]

:tada: Congrats on getting your first pull request merged! We here at Palo Alto Networks are so grateful! :heart: