Suppress superfluous error message when pushing to a cell the first time.
Suppress superfluous error message when pushing to a cell the first time.

If remote bits aren't found, it used to print:
  cksum: /tmp/onos-1.1.0.jono.tar.gz: No such file or directory

which may give the impression the install failed.

Fixes ONOS-704.

Change-Id: Ic03f3e546abad1e4dcfb69f61b7766be63c016ef

opennetworkinglab/onos,planoAccess/clonedONOS,Shashikanth-Huawei/bmp,jinlongliu/onos,sonu283304/onos,opennetworkinglab/onos,jinlongliu/onos,donNewtonAlpha/onos,packet-tracker/onos,y-higuchi/onos,gkatsikas/onos,LorenzReinhart/ONOSnew,kuujo/onos,packet-tracker/onos,oplinkoms/onos,jmiserez/onos,Shashikanth-Huawei/bmp,gkatsikas/onos,sdnwiselab/onos,opennetworkinglab/onos,SmartInfrastructures/dreamer,rvhub/onos,chinghanyu/onos,rvhub/onos,jmiserez/onos,opennetworkinglab/onos,zsh2938/onos,donNewtonAlpha/onos,opennetworkinglab/onos,mengmoya/onos,kuujo/onos,osinstom/onos,VinodKumarS-Huawei/ietf96yang,kuujo/onos,rvhub/onos,chenxiuyang/onos,sdnwiselab/onos,planoAccess/clonedONOS,y-higuchi/onos,planoAccess/clonedONOS,jmiserez/onos,kkkane/ONOS,lsinfo3/onos,osinstom/onos,zsh2938/onos,oplinkoms/onos,LorenzReinhart/ONOSnew,mengmoya/onos,Shashikanth-Huawei/bmp,mengmoya/onos,donNewtonAlpha/onos,sdnwiselab/onos,gkatsikas/onos,sonu283304/onos,packet-tracker/onos,ravikumaran2015/ravikumaran201504,chenxiuyang/onos,gkatsikas/onos,sdnwiselab/onos,castroflavio/onos,LorenzReinhart/ONOSnew,chinghanyu/onos,oplinkoms/onos,CNlukai/onos-gerrit-test,oeeagle/onos,kuujo/onos,oeeagle/onos,chinghanyu/onos,chinghanyu/onos,ravikumaran2015/ravikumaran201504,kuujo/onos,maheshraju-Huawei/actn,sdnwiselab/onos,oplinkoms/onos,LorenzReinhart/ONOSnew,kuangrewawa/onos,sonu283304/onos,jinlongliu/onos,maheshraju-Huawei/actn,kuujo/onos,VinodKumarS-Huawei/ietf96yang,y-higuchi/onos,lsinfo3/onos,Shashikanth-Huawei/bmp,oeeagle/onos,mengmoya/onos,gkatsikas/onos,oplinkoms/onos,sonu283304/onos,sdnwiselab/onos,kkkane/ONOS,oplinkoms/onos,castroflavio/onos,CNlukai/onos-gerrit-test,zsh2938/onos,kuangrewawa/onos,lsinfo3/onos,jinlongliu/onos,oplinkoms/onos,SmartInfrastructures/dreamer,kkkane/ONOS,kkkane/ONOS,castroflavio/onos,donNewtonAlpha/onos,planoAccess/clonedONOS,kuangrewawa/onos,osinstom/onos,packet-tracker/onos,CNlukai/onos-gerrit-test,osinstom/onos,y-higuchi/onos,donNewtonAlpha/onos,maheshraju-Huawei/actn,mengmoya/onos,oeeagle/onos,VinodKumarS-Huawei/ietf96yang,rvhub/onos,SmartInfrastructures/dreamer,castroflavio/onos,chenxiuyang/onos,jmiserez/onos,lsinfo3/onos,VinodKumarS-Huawei/ietf96yang,maheshraju-Huawei/actn,VinodKumarS-Huawei/ietf96yang,chenxiuyang/onos,zsh2938/onos,Shashikanth-Huawei/bmp,kuujo/onos,y-higuchi/onos,LorenzReinhart/ONOSnew,CNlukai/onos-gerrit-test,ravikumaran2015/ravikumaran201504,osinstom/onos,opennetworkinglab/onos,maheshraju-Huawei/actn,gkatsikas/onos