ui: show memory usage in VM statistics (#3474)

Add some more detail to the VM statistics. Added the Memory Used detail

Author: kioie

ui/scripts/instances.js

@@ -3382,6 +3382,9 @@
                             cpuused: {
                                 label: 'label.cpu.utilized'
                             },
+                            memorykbs: {
+                                label: 'label.memory.used'
+                            },
                             networkkbsread: {
                                 label: 'label.network.read'
                             },
@@ -3412,6 +3415,7 @@
                                         data: {
                                             totalCPU: jsonObj.cpunumber + " x " + cloudStack.converters.convertHz(jsonObj.cpuspeed),
                                             cpuused: jsonObj.cpuused,
+                                            memorykbs: jsonObj.memorykbs + " of "+ cloudStack.converters.convertBytes(jsonObj.memory * 1024.0 * 1024.0),
                                             networkkbsread: (jsonObj.networkkbsread == null) ? "N/A" : cloudStack.converters.convertBytes(jsonObj.networkkbsread * 1024),
                                             networkkbswrite: (jsonObj.networkkbswrite == null) ? "N/A" : cloudStack.converters.convertBytes(jsonObj.networkkbswrite * 1024),
                                             diskkbsread: (jsonObj.diskkbsread == null) ? "N/A" : ((jsonObj.hypervisor == "KVM") ? cloudStack.converters.convertBytes(jsonObj.diskkbsread * 1024) : ((jsonObj.hypervisor == "XenServer") ? cloudStack.converters.convertBytes(jsonObj.diskkbsread * 1024) + "/s" : "N/A")),