MT#8773 fix perl warning

Two-argument "open" used at line 1364, column 2.  See page 207 of PBP.  (Severity: 5)
Bareword file handle opened at line 1367, column 2.  See pages 202,204 of PBP.  (Severity: 5)
Two-argument "open" used at line 1367, column 2.  See page 207 of PBP.  (Severity: 5)

Change-Id: I5ec16159d2240487a4a6e787f30362a3cfea9d97
MT#8117 use central database for billing and duplicate if necessary

Change-Id: Ib439ff274d30a9b1ed04d45accdb87b8663c58eb
MT#8125 disable rate-o-mat daemon from starting on non proxy nodes

Change-Id: I13a3a11b3fde177b1612731af86ea2af350ab551