Update kubernetes versions to test against.
Update kubernetes versions to test against.

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