update pom for publishing to OSS sonatype repo
update pom for publishing to OSS sonatype repo

howepeng/cobarclient,WilliamRen/cobarclient,fengshao0907/cobarclient,IBYoung/cobarclient,simplechen/cobarclient,wangcan2014/cobarclient,alibaba/cobarclient,c3p0hz/cobarclient,E312232595/cobarclient,matrix-stone/cobarclient,elijah513/cobarclient,yuzhu712/cobarclient