tgc-revival: fix RegionInstantSnapshot tests

[zli82016]

--- FAIL: TestAccComputeRegionInstantSnapshot (2.88s)
    --- FAIL: TestAccComputeRegionInstantSnapshot/TestAccComputeRegionInstantSnapshot_resourceManagerTags (2.88s)
        --- FAIL: TestAccComputeRegionInstantSnapshot/TestAccComputeRegionInstantSnapshot_resourceManagerTags/step1 (0.00s)
            assert_test_files.go:117: TestAccComputeRegionInstantSnapshot_resourceManagerTags_step1: Starting test with retry logic.
            assert_test_files.go:92: TestAccComputeRegionInstantSnapshot_resourceManagerTags_step1: Test for the primary resource google_compute_region_instant_snapshot.foobar begins.
panic: runtime error: slice bounds out of range [9:7] [recovered, repanicked]

I have modified RegionInstantSnapshot.yaml in Magic Modules to add cai_resource_kind: InstantSnapshot, which will ensure that both zonal and regional instant snapshots are grouped under the compute.googleapis.com/InstantSnapshot CAI asset 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 fe72e0f:

Diff report

Your PR generated the following diffs in downstream repositories:

Repository	Diff Link	Changes
terraform-google-conversion	View Diff	4 files changed, 9 insertions(+), 7 deletions(-)