Update Data Catalog samples to client library V1

[mesmacosta]

With release of V1 library, we must update the samples to instruct users to use the supported version.

• [ x] Tests pass
• [ n/a] Appropriate changes to README are included in PR
• [ n/a] API's need to be enabled to test (tell us)
• [ n/a] Environment Variables need to be set (ask us to set them)

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[mesmacosta]

@lesv can you add kokoru:run label?

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