EAGLE-138 Fix JMX Collector util_func bug
EAGLE-138 Fix JMX Collector util_func bug

https://issues.apache.org/jira/browse/EAGLE-138

Closes #74

qingwen220/eagle,DadanielZ/incubator-eagle,rlugojr/incubator-eagle,JingGe/incubator-eagle,zombieJ/incubator-eagle,DadanielZ/incubator-eagle,pkuwm/incubator-eagle,DadanielZ/incubator-eagle,haoch/incubator-eagle,baibaichen/eagle,qingwen220/eagle,JingGe/incubator-eagle,1haodian/eagle,haoch/incubator-eagle,haoch/incubator-eagle,1haodian/eagle,1haodian/eagle,Jashchahal/incubator-eagle,Jashchahal/incubator-eagle,anyway1021/incubator-eagle,anyway1021/incubator-eagle,1haodian/eagle,haoch/incubator-eagle,JingGe/incubator-eagle,yonzhang/incubator-eagle,JingGe/incubator-eagle,zombieJ/incubator-eagle,qingwen220/eagle,haoch/Eagle,DadanielZ/incubator-eagle,pkuwm/incubator-eagle,pkuwm/incubator-eagle,haoch/incubator-eagle,zombieJ/incubator-eagle,DadanielZ/incubator-eagle,rlugojr/incubator-eagle,zombieJ/incubator-eagle,baibaichen/eagle,Jashchahal/incubator-eagle,qingwen220/eagle,baibaichen/eagle,pkuwm/incubator-eagle,yonzhang/incubator-eagle,Jashchahal/incubator-eagle,haoch/Eagle,rlugojr/incubator-eagle,rlugojr/incubator-eagle,1haodian/eagle,JingGe/incubator-eagle,haoch/incubator-eagle,anyway1021/incubator-eagle,pkuwm/incubator-eagle,rlugojr/incubator-eagle,yonzhang/incubator-eagle,anyway1021/incubator-eagle,anyway1021/incubator-eagle,DadanielZ/incubator-eagle,anyway1021/incubator-eagle,JingGe/incubator-eagle,haoch/Eagle,qingwen220/eagle,Jashchahal/incubator-eagle,yonzhang/incubator-eagle,pkuwm/incubator-eagle,yonzhang/incubator-eagle,baibaichen/eagle,haoch/Eagle,rlugojr/incubator-eagle,Jashchahal/incubator-eagle,baibaichen/eagle,zombieJ/incubator-eagle,haoch/Eagle