CP-9370:Add network type and more error message for resource list report feature

Add network type column to network table
Add memory usage ratio to VM and Host tables
Add detail error message in exporting report

Signed-off-by: Cheng Zhang <cheng.zhang@citrix.com>
The Message NETWORKPANEL_VLAN should be changed to "External network" instead of "VLAN", because that's what we call it in the New Network Wizard.