tgc-revival: Ignore shareSettings in compute reservation since it is missing in CAI

[zli82016]

Resolves integration test failures for google_compute_reservation due to share_settings.share_type being missing in CAI asset payload. Marks the property as is_missing_in_cai: true.

--- FAIL: TestAccComputeReservation/TestAccComputeReservation_sharedReservationBasicExample/step1 (0.22s)
           assert_test_files.go:138: TestAccComputeReservation_sharedReservationBasicExample_step1: Failed after 5 attempts. First real error: retryable: missing fields: [share_settings.share_type]

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[modular-magician]

Hi there, I'm the Modular magician. I've detected the following information about your changes for commit a63bd7f:

Diff report

Your PR generated the following diffs in downstream repositories:

Repository	Diff Link	Changes
terraform-google-conversion	View Diff	1 file changed, 1 insertion(+)