Add rocky-linux-cloud to the builtin project to search for images if …

[modular-magician]

…image name contains rocky-linux Closes #11184

Upstream hashicorp/terraform-provider-google#11185
Closes hashicorp/terraform-provider-google#11184

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compute: added `rocky-linux-cloud` to the builtin project to search for images if image name contains `rocky-linux`

Derived from GoogleCloudPlatform/magic-modules#5773

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