Refactor node info discovery
Refactor node info discovery

naxhh/heapster,luxas/heapster,whuwxl/heapster,huangyuqi/heapster,jfoy/heapster,vicki-c/heapster,liuhewei/heapster,naxhh/heapster,bluebreezecf/heapster,bruceauyeung/heapster,shilpamayanna/heapster,vishh/heapster-1,saad-ali/heapster,piosz/heapster,mdshuai/heapster,apeeyush/heapster,piosz/heapster,krzyzacy/heapster,wulonghui/heapster,liubog2008/heapster,jszczepkowski/heapster,a-robinson/heapster,huangyuqi/heapster,relh/heapster,mwielgus/heapster,bruceauyeung/heapster,jszczepkowski/heapster,wulonghui/heapster,afein/heapster,ravihansa3000/heapster,jfoy/heapster,liubog2008/heapster,a-robinson/heapster,apeeyush/heapster,skytap/heapster,Stackdriver/heapster,jackzampolin/heapster,skytap/heapster,mwringe/heapster,digideskio/heapster,taimir/heapster,AlmogBaku/heapster,AlmogBaku/heapster,Huawei-PaaS/heapster,johanneswuerbach/heapster,Stackdriver/heapster,saiwl/heapster,jackzampolin/heapster,vishh/heapster-1,saad-ali/heapster,nlamirault/heapster,lavalamp/heapster,luxas/heapster,vicki-c/heapster,thucatebay/heapster,digideskio/heapster,relh/heapster,fzu-huang/heapster,whuwxl/heapster,titilambert/heapster,adfin/statster,titilambert/heapster,mwielgus/heapster,mdshuai/heapster,afein/heapster,krzyzacy/heapster,thucatebay/heapster,saiwl/heapster,mwringe/heapster,lavalamp/heapster,burmanm/heapster,Huawei-PaaS/heapster,taimir/heapster,johanneswuerbach/heapster,liuhewei/heapster,andyxning/heapster,fzu-huang/heapster,andyxning/heapster,aegixx/heapster,ravihansa3000/heapster,aegixx/heapster,dalanlan/heapster,burmanm/heapster,nlamirault/heapster,adfin/statster,bluebreezecf/heapster,dalanlan/heapster,shilpamayanna/heapster