resource/cloudflare_ipsec_tunnel: Adds IPsec tunnel health_check_direction & health_check_rate parameters

[cehrig]

The following PR to cloudflare-go is required before this can be merged:
cloudflare/cloudflare-go#1503

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This PR adds two new fields to the cloudflare_ipsec_tunnel resource:

• health_check_direction: one of unidirectional, bidirectional
• health_check_rate: one of low, mid, high

Additionally an issue with creating IPsec tunnel health checks in the first place has been fixed.

This has been tested against an actual environment & integration tests have been adjusted.

[github-actions]

changelog detected ✅

[github-actions]

Marking this pull request as stale due to 14 days of inactivity. This helps our maintainers find and focus on the active pull requests. If this pull request receives no comments in the next 7 days it will automatically be closed. Maintainers can also remove the lifecycle/stale label.
If this pull request was automatically closed and you feel this pull request should be reopened, we encourage creating a new pull request linking back to this one for added context. Thank you!

[github-actions]

Marking this pull request as stale due to 14 days of inactivity. This helps our maintainers find and focus on the active pull requests. If this pull request receives no comments in the next 7 days it will automatically be closed. Maintainers can also remove the lifecycle/stale label.
If this pull request was automatically closed and you feel this pull request should be reopened, we encourage creating a new pull request linking back to this one for added context. Thank you!

[cehrig]

Hey @jacobbednarz anything needed from my end? Looks like we are all green after the cloudflare-go merge.

[jacobbednarz]

cool! let me run the tests and we can get this merged.

[github-actions]

This functionality has been released in v4.28.0 of the Terraform Cloudflare Provider.

Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading.

For further feature requests or bug reports with this functionality, please create a new GitHub issue following the template. Thank you!