Comment 33 for bug 1272083

Again, thanks for taking time to review HPCC Charm. Based on the 5th review we
made following changes:
1) add '-e' bash option for all the hook scripts. So if any statement return non-zero
    value the hook script will stop execution.
2) Remove unused charm upgrade and hpcc-relation-changed hooks. The later will
    result "INFO" level message from 'juju charm proof' as expected.
3) For reported HPCC roxie process fails to start, it is due to lacking of network resource
    (/proc/sys/net/core/rmem_max. It is only happens on some Juju local environment. We
    will open a bug against juju-core.