packet: fix formatting management CIDRs values for host protection
If there is no management_cidrs specified, the template produces empty
line after 'managementCIDRs:' line, which shouldn't be there.
@@ -3,7 +3,7 @@ clusterCIDRs:
- ${cidr}
%{ endfor ~}
managementCIDRs:
-%{ for cidr in management_cidrs ~}
+%{~ for cidr in management_cidrs }
- ${cidr}
%{~ endfor }
hostEndpoints:
