Handle CalledProcessError when removing files from downloaded zip file
Handle CalledProcessError when removing files from downloaded zip file

Instead of exiting with a python stack trace, catch the error and
print a formatted error message, then exit with error code.

Change-Id: I5935ed46e71cdba4e28c06291a9f009e83f20536

gcoders/gerrit,WANdisco/gerrit,MerritCR/merrit,gcoders/gerrit,MerritCR/merrit,WANdisco/gerrit,joshuawilson/merrit,Saulis/gerrit,MerritCR/merrit,TonyChai24/test,hdost/gerrit,WANdisco/gerrit,hdost/gerrit,thesamet/gerrit,zommarin/gerrit,bootstraponline-archive/gerrit-mirror,midnightradio/gerrit,netroby/gerrit,Seinlin/gerrit,bootstraponline-archive/gerrit-mirror,quyixia/gerrit,jackminicloud/test,TonyChai24/test,gracefullife/gerrit,Saulis/gerrit,qtproject/qtqa-gerrit,gcoders/gerrit,quyixia/gerrit,Distrotech/gerrit,Saulis/gerrit,quyixia/gerrit,Team-OctOS/host_gerrit,anminhsu/gerrit,Seinlin/gerrit,WANdisco/gerrit,gcoders/gerrit,MerritCR/merrit,supriyantomaftuh/gerrit,joshuawilson/merrit,netroby/gerrit,Team-OctOS/host_gerrit,thinkernel/gerrit,TonyChai24/test,Overruler/gerrit,gerrit-review/gerrit,bpollack/gerrit,renchaorevee/gerrit,anminhsu/gerrit,midnightradio/gerrit,Seinlin/gerrit,midnightradio/gerrit,Seinlin/gerrit,Saulis/gerrit,gcoders/gerrit,pkdevbox/gerrit,MerritCR/merrit,WANdisco/gerrit,netroby/gerrit,thesamet/gerrit,gerrit-review/gerrit,netroby/gerrit,supriyantomaftuh/gerrit,Saulis/gerrit,Team-OctOS/host_gerrit,joshuawilson/merrit,zommarin/gerrit,qtproject/qtqa-gerrit,Overruler/gerrit,TonyChai24/test,pkdevbox/gerrit,jackminicloud/test,dwhipstock/gerrit,GerritCodeReview/gerrit,joshuawilson/merrit,GerritCodeReview/gerrit,renchaorevee/gerrit,dwhipstock/gerrit,thinkernel/gerrit,GerritCodeReview/gerrit,thesamet/gerrit,pkdevbox/gerrit,quyixia/gerrit,Seinlin/gerrit,anminhsu/gerrit,GerritCodeReview/gerrit,Saulis/gerrit,GerritCodeReview/gerrit,quyixia/gerrit,thesamet/gerrit,Team-OctOS/host_gerrit,Team-OctOS/host_gerrit,gerrit-review/gerrit,renchaorevee/gerrit,thinkernel/gerrit,dwhipstock/gerrit,Distrotech/gerrit,netroby/gerrit,pkdevbox/gerrit,bpollack/gerrit,GerritCodeReview/gerrit,hdost/gerrit,jackminicloud/test,Overruler/gerrit,pkdevbox/gerrit,netroby/gerrit,gerrit-review/gerrit,TonyChai24/test,Distrotech/gerrit,gracefullife/gerrit,WANdisco/gerrit,dwhipstock/gerrit,supriyantomaftuh/gerrit,pkdevbox/gerrit,bpollack/gerrit,anminhsu/gerrit,qtproject/qtqa-gerrit,supriyantomaftuh/gerrit,midnightradio/gerrit,midnightradio/gerrit,Distrotech/gerrit,supriyantomaftuh/gerrit,gracefullife/gerrit,pkdevbox/gerrit,quyixia/gerrit,qtproject/qtqa-gerrit,gracefullife/gerrit,dwhipstock/gerrit,GerritCodeReview/gerrit,joshuawilson/merrit,zommarin/gerrit,GerritCodeReview/gerrit,anminhsu/gerrit,midnightradio/gerrit,MerritCR/merrit,jackminicloud/test,Overruler/gerrit,TonyChai24/test,thesamet/gerrit,Overruler/gerrit,gracefullife/gerrit,gerrit-review/gerrit,thinkernel/gerrit,Team-OctOS/host_gerrit,bootstraponline-archive/gerrit-mirror,renchaorevee/gerrit,Distrotech/gerrit,Distrotech/gerrit,jackminicloud/test,jackminicloud/test,supriyantomaftuh/gerrit,gerrit-review/gerrit,qtproject/qtqa-gerrit,hdost/gerrit,qtproject/qtqa-gerrit,thesamet/gerrit,renchaorevee/gerrit,anminhsu/gerrit,joshuawilson/merrit,MerritCR/merrit,zommarin/gerrit,Overruler/gerrit,thinkernel/gerrit,gerrit-review/gerrit,hdost/gerrit,WANdisco/gerrit,jackminicloud/test,netroby/gerrit,Distrotech/gerrit,supriyantomaftuh/gerrit,hdost/gerrit,quyixia/gerrit,bpollack/gerrit,anminhsu/gerrit,bootstraponline-archive/gerrit-mirror,Seinlin/gerrit,joshuawilson/merrit,TonyChai24/test,hdost/gerrit,renchaorevee/gerrit,thinkernel/gerrit,bpollack/gerrit,Team-OctOS/host_gerrit,zommarin/gerrit,thesamet/gerrit,renchaorevee/gerrit,gcoders/gerrit,bpollack/gerrit,bootstraponline-archive/gerrit-mirror,gcoders/gerrit,joshuawilson/merrit,Seinlin/gerrit,dwhipstock/gerrit,qtproject/qtqa-gerrit,thinkernel/gerrit,MerritCR/merrit,bootstraponline-archive/gerrit-mirror,dwhipstock/gerrit