CLOUDSTACK-2434: Enabling irqbalance only on router having mutiple virtual processors
CLOUDSTACK-2758: Fix permissions of catalina.out

Because of CVE 2013-1976, catalina.out gets owned by root. Since
cloudstack-management is run under a privileged user env. of cloud have
cloud ($TOMCAT_USER) own the catalina.out.

Signed-off-by: Prasanna Santhanam <tsp@apache.org>