Feature(new_metrics): migrate migrate replica-level metrics for pegasus_event_listener

[empiredan]

Some classes that have few of replica-level metrics are collected into one issue to be migrated.

Following metrics are the members of pegasus_event_listener (pegasus_event_listener.cpp), which is created at the construction of pegasus_server_impl:

New Metric Name	New Metric Type	Old Perf Counter Name	Old Perf Counter Type	Old Perf Counter Variable	Compute New Metric From Old Perf Counter
_pfc_recent_rdb_compaction_input_bytes	increase(Counter)
_pfc_recent_rdb_compaction_output_bytes	increase(Counter)