condense the very similar rest api log printing

Registered by zhufl

When tempest testcases run, there will be many rest api log outputs, and a big part of them
are very similar(e.g. , the log when periodically getting the volume status while volume is downloading),
so these very similar log can be suppressed to something like "repeated_req_and_resp", thus
the whole output will be much clearlier

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zhufl
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