CLOUDSTACK-7318: [UI] Add error handler for VM snapshot creation
CLOUDSTACK-7318: [UI] Add error handler for VM snapshot creation

Fixes the issue where processing wheel continue to spin even after error
message is displayed during VM snapshot creation

GabrielBrascher/cloudstack,resmo/cloudstack,GabrielBrascher/cloudstack,resmo/cloudstack,wido/cloudstack,wido/cloudstack,jcshen007/cloudstack,DaanHoogland/cloudstack,GabrielBrascher/cloudstack,resmo/cloudstack,GabrielBrascher/cloudstack,DaanHoogland/cloudstack,wido/cloudstack,jcshen007/cloudstack,DaanHoogland/cloudstack,jcshen007/cloudstack,resmo/cloudstack,DaanHoogland/cloudstack,jcshen007/cloudstack,resmo/cloudstack,DaanHoogland/cloudstack,wido/cloudstack,GabrielBrascher/cloudstack,jcshen007/cloudstack,wido/cloudstack,resmo/cloudstack,jcshen007/cloudstack,DaanHoogland/cloudstack,DaanHoogland/cloudstack,resmo/cloudstack,wido/cloudstack,GabrielBrascher/cloudstack,jcshen007/cloudstack,wido/cloudstack,GabrielBrascher/cloudstack