abdi_operation: don't report first cycle

Only report the first complete cycle, that is where the CycleReportJson
has observed the start and end of it.

This avoids incomplete results being recorded when restarting arcyd.

Test Plan:
$ ./precommit.sh
$ ./testbed/arcyd/test_shell.sh
    $ cat ../arcyd/savereport.txt
    .. no incomplete results ..