Adds a --no-repair flag to upgrade (#4217)
Adds a --no-repair flag to upgrade (#4217)

On large installs, repair is really painful. The only alternative right
now is by digging in and using `sentry django syncdb/migrate` manually.
WHich is a bit of an implementation detail. This just surfaces the
ability to skip repair step.
gencer/sentry,BuildingLink/sentry,mvaled/sentry,alexm92/sentry,JamesMura/sentry,mvaled/sentry,looker/sentry,jean/sentry,zenefits/sentry,JackDanger/sentry,looker/sentry,zenefits/sentry,looker/sentry,mvaled/sentry,gencer/sentry,jean/sentry,BuildingLink/sentry,beeftornado/sentry,ifduyue/sentry,ifduyue/sentry,JamesMura/sentry,jean/sentry,mvaled/sentry,zenefits/sentry,beeftornado/sentry,zenefits/sentry,BuildingLink/sentry,beeftornado/sentry,alexm92/sentry,JamesMura/sentry,JamesMura/sentry,gencer/sentry,zenefits/sentry,alexm92/sentry,mvaled/sentry,JackDanger/sentry,BuildingLink/sentry,JackDanger/sentry,ifduyue/sentry,ifduyue/sentry,mvaled/sentry,gencer/sentry,gencer/sentry,BuildingLink/sentry,ifduyue/sentry,JamesMura/sentry,looker/sentry,jean/sentry,jean/sentry,looker/sentry