Add Pub/Sub Lite reservation support to terraform.

[dpcollins-google]

Also fix doc links for Pub/Sub Lite.

fixes hashicorp/terraform-provider-google#10257

If this PR is for Terraform, I acknowledge that I have:

• Searched through the issue tracker for an open issue that this either resolves or contributes to, commented on it to claim it, and written "fixes {url}" or "part of {url}" in this PR description. If there were no relevant open issues, I opened one and commented that I would like to work on it (not necessary for very small changes).
• Generated Terraform, and ran make test and make lint to ensure it passes unit and linter tests.
• Ensured that all new fields I added that can be set by a user appear in at least one example (for generated resources) or third_party test (for handwritten resources or update tests).
• Ran relevant acceptance tests (If the acceptance tests do not yet pass or you are unable to run them, please let your reviewer know).
• Read the Release Notes Guide before writing my release note below.

`google_pubsub_lite_reservation`

pubsub:  Added support for references to `google_pubsub_lite_reservation` to `google_pubsub_lite_topic`.

[modular-magician]

Hello! I am a robot who works on Magic Modules PRs.

I have detected that you are a community contributor, so your PR will be assigned to someone with a commit-bit on this repo for initial review.

Thanks for your contribution! A human will be with you soon.

@ndmckinley, please review this PR or find an appropriate assignee.

[nat-henderson]

A good start - it looks like you've referenced some examples but haven't added them to the PR. You'll need those to show that the code is working. :)

[dpcollins-google]

I've added the examples- building now, unfortunately it takes a while.

[nat-henderson]

Yep! LGTM if the tests pass - I'll send the command to run them once the differ finished.

[modular-magician]

Hi! I'm the modular magician. Your PR generated some diffs in downstreams - here they are.

Diff report:

Terraform GA: Diff ( 10 files changed, 755 insertions(+), 6 deletions(-))
Terraform Beta: Diff ( 11 files changed, 756 insertions(+), 7 deletions(-))
TF Conversion: Diff ( 2 files changed, 96 insertions(+))
TF OiCS: Diff ( 5 files changed, 119 insertions(+))

[nat-henderson]

Okay - running the tests now. /gcbrun

[modular-magician]

Hi! I'm the modular magician. Your PR generated some diffs in downstreams - here they are.

Diff report:

Terraform GA: Diff ( 10 files changed, 755 insertions(+), 6 deletions(-))
Terraform Beta: Diff ( 10 files changed, 755 insertions(+), 6 deletions(-))
TF Conversion: Diff ( 2 files changed, 96 insertions(+))
TF OiCS: Diff ( 5 files changed, 119 insertions(+))

[modular-magician]

I have triggered VCR tests in RECORDING mode for the following tests that failed during VCR: TestAccDatasourceGoogleServiceNetworkingPeeredDnsDomain_basic|TestAccPubsubLiteReservation_pubsubLiteReservationBasicExample|TestAccPubsubLiteTopic_pubsubLiteTopicBasicExample You can view the result here: https://ci-oss.hashicorp.engineering/viewQueued.html?itemId=209185

[nat-henderson]

Great - as long as that last test passes, this can go in today and be released next week Monday.

[nat-henderson]

Ah, unfortunately not:

------- Stdout: -------
=== RUN   TestAccPubsubLiteReservation_pubsubLiteReservationBasicExample
=== PAUSE TestAccPubsubLiteReservation_pubsubLiteReservationBasicExample
=== CONT  TestAccPubsubLiteReservation_pubsubLiteReservationBasicExample
provider_test.go:278: Step 1/2 error: After applying this test step, the plan was not empty.
stdout:
An execution plan has been generated and is shown below.
Resource actions are indicated with the following symbols:
~ update in-place
Terraform will perform the following actions:
# google_pubsub_lite_reservation.example will be updated in-place
~ resource "google_pubsub_lite_reservation" "example" {
id                  = "projects/1067888929963/locations/us-central1/reservations/tf-test-example-reservationmbdz2vv2gl"
name                = "tf-test-example-reservationmbdz2vv2gl"
~ throughput_capacity = 0 -> 2
# (1 unchanged attribute hidden)
}
Plan: 0 to add, 1 to change, 0 to destroy.
--- FAIL: TestAccPubsubLiteReservation_pubsubLiteReservationBasicExample (7.51s)
FAIL

[modular-magician]

Hi! I'm the modular magician. Your PR generated some diffs in downstreams - here they are.

Diff report:

Terraform GA: Diff ( 10 files changed, 755 insertions(+), 6 deletions(-))
Terraform Beta: Diff ( 10 files changed, 755 insertions(+), 6 deletions(-))
TF Conversion: Diff ( 2 files changed, 96 insertions(+))
TF OiCS: Diff ( 5 files changed, 119 insertions(+))

[modular-magician]

Hi! I'm the modular magician. Your PR generated some diffs in downstreams - here they are.

Diff report:

Terraform GA: Diff ( 10 files changed, 755 insertions(+), 6 deletions(-))
Terraform Beta: Diff ( 10 files changed, 755 insertions(+), 6 deletions(-))
TF Conversion: Diff ( 2 files changed, 96 insertions(+))
TF OiCS: Diff ( 5 files changed, 119 insertions(+))

[nat-henderson]

It just needed a minor change - it needed to use locations instead of regions for the reference. :)

Tests pass on my machine but I'll wait for the diffs to generate to be sure.

[modular-magician]

Hi! I'm the modular magician. Your PR generated some diffs in downstreams - here they are.

Diff report:

Terraform GA: Diff ( 10 files changed, 756 insertions(+), 6 deletions(-))
Terraform Beta: Diff ( 11 files changed, 757 insertions(+), 7 deletions(-))
TF Conversion: Diff ( 2 files changed, 97 insertions(+))
TF OiCS: Diff ( 5 files changed, 119 insertions(+))