Only log EPP and WHIOS connections
Only log EPP and WHIOS connections

Only connections that have backend are of interest to us. Move the logging
statement accordingly.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=208898433

google/nomulus,google/nomulus,google/nomulus,google/nomulus,google/nomulus,google/nomulus