[#15779] Add google_network_security_firewall_endpoint resource

[LucaPrete]

Adds the new google_network_security_firewall_endpoint resource.

fixes hashicorp/terraform-provider-google/issues/15779

Release Note Template for Downstream PRs (will be copied)

`google_network_security_firewall_endpoint` (beta)

[modular-magician]

Hello! I am a robot. It looks like you are a: Community Contributor Googler Core Contributor. Tests will run automatically.

@roaks3, a repository maintainer, has been assigned to review your changes. If you have not received review feedback within 2 business days, please leave a comment on this PR asking them to take a look.

You can help make sure that review is quick by doing a self-review and by running impacted tests locally.

[modular-magician]

Hi there, I'm the Modular magician. I've detected the following information about your changes:

Diff report

Your PR generated some diffs in downstreams - here they are.

Terraform GA: Diff ( 2 files changed, 152 insertions(+))
Terraform Beta: Diff ( 4 files changed, 719 insertions(+), 2 deletions(-))
TF Conversion: Diff ( 1 file changed, 76 insertions(+))

[modular-magician]

Tests analytics

Total tests: 27
Passed tests 26
Skipped tests: 1
Affected tests: 0

Click here to see the affected service packages

• networksecurity

$\textcolor{green}{\textsf{All tests passed in REPLAYING mode.}}$
View the build log

[modular-magician]

Tests analytics

Total tests: 27
Passed tests 26
Skipped tests: 1
Affected tests: 0

Click here to see the affected service packages

• networksecurity

$\textcolor{green}{\textsf{All tests passed in REPLAYING mode.}}$
View the build log

[roaks3]

Mostly LGTM, just a few minor suggestions

[LucaPrete]

@roaks3 replies to all comments. I think we're ready for another round of review :)

[modular-magician]

Hi there, I'm the Modular magician. I've detected the following information about your changes:

Diff report

Your PR generated some diffs in downstreams - here they are.

Terraform GA: Diff ( 2 files changed, 152 insertions(+))
Terraform Beta: Diff ( 5 files changed, 879 insertions(+), 2 deletions(-))
TF Conversion: Diff ( 1 file changed, 76 insertions(+))

[modular-magician]

Tests analytics

Total tests: 33
Passed tests 32
Skipped tests: 1
Affected tests: 0

Click here to see the affected service packages

• networksecurity

$\textcolor{green}{\textsf{All tests passed in REPLAYING mode.}}$
View the build log

[roaks3]

LGTM and tests pass