Fix issues found by FindBugs: INT_BAD_COMPARISON_WITH_SIGNED_BYTE
Fix issues found by FindBugs: INT_BAD_COMPARISON_WITH_SIGNED_BYTE

http://findbugs.sourceforge.net/bugDescriptions.html#INT_BAD_COMPARISON_WITH_SIGNED_BYTE

Change-Id: I144336de47c844d526d245ea5cab64c133ff3741

opennetworkinglab/spring-open,opennetworkinglab/spring-open,opennetworkinglab/spring-open,opennetworkinglab/spring-open,opennetworkinglab/spring-open,opennetworkinglab/spring-open