<fix>[i18n]: add error details if the vm migration fails

the original error message does not contain details, so users
do not know what happened and how to solve it. so, we add the
error details into the error message.

Resolves: ZSV-10989

Change-Id: I776a6d696c747a7a76736f657769656c79696962

Author: Chen, Taiyue

conf/i18n/messages_en_US.properties

@@ -1884,7 +1884,7 @@ cannot\ do\ volume\ snapshot\ merge\ when\ vm[uuid\:%s]\ is\ in\ state\ of\ %s.\
 live\ volume\ snapshot\ merge\ needs\ libvirt\ version\ greater\ than\ %s,\ current\ libvirt\ version\ is\ %s.\ Please\ stop\ vm\ and\ redo\ the\ operation\ or\ detach\ the\ volume\ if\ it's\ data\ volume = live volume snapshot merge needs libvirt version greater than {0}, current libvirt version is {1}. Please stop vm and redo the operation or detach the volume if it''s data volume
 vm[uuid\:%s]\ is\ not\ Running\ or\ Stopped,\ current\ state[%s] = vm[uuid:{0}] is not Running or Stopped, current state[{1}]
 kvm\ host[uuid\:%s,\ name\:%s,\ ip\:%s]\ doesn't\ not\ support\ live\ snapshot.\ please\ stop\ vm[uuid\:%s]\ and\ try\ again = kvm host[uuid:{0}, name:{1}, ip:{2}] doesn''t not support live snapshot. please stop vm[uuid:{3}] and try again
-failed\ to\ migrate\ VM = failed to migrate VM
+failed\ to\ migrate\ VM,\ because\ %s = failed to migrate VM, because {0}
 failed\ to\ update\ nic[vm\:%s]\ on\ kvm\ host[uuid\:%s,\ ip\:%s],because\ %s = failed to update nic[vm:{0}] on kvm host[uuid:{1}, ip:{2}],because {3}
 failed\ to\ attach\ nic[uuid\:%s,\ vm\:%s]\ on\ kvm\ host[uuid\:%s,\ ip\:%s],because\ %s,\ please\ try\ again\ or\ delete\ device[%s]\ by\ yourself = failed to attach nic[uuid:{0}, vm:{1}] on kvm host[uuid:{2}, ip:{3}],because {4}, please try again or delete device[{5}] by yourself
 failed\ to\ attach\ nic[uuid\:%s,\ vm\:%s]\ on\ kvm\ host[uuid\:%s,\ ip\:%s],because\ %s = failed to attach nic[uuid:{0}, vm:{1}] on kvm host[uuid:{2}, ip:{3}],because {4}

conf/i18n/messages_zh_CN.properties

@@ -1884,7 +1884,7 @@ cannot\ do\ volume\ snapshot\ merge\ when\ vm[uuid\:%s]\ is\ in\ state\ of\ %s.\
 live\ volume\ snapshot\ merge\ needs\ libvirt\ version\ greater\ than\ %s,\ current\ libvirt\ version\ is\ %s.\ Please\ stop\ vm\ and\ redo\ the\ operation\ or\ detach\ the\ volume\ if\ it's\ data\ volume = 快照合并需要libvirt版本大于[0]，当前libvirt版本为[1]，请停止虚拟机并重新执行操作，或者将数据卷从虚拟机中分离
 vm[uuid\:%s]\ is\ not\ Running\ or\ Stopped,\ current\ state[%s] = 虚拟机[uuid:{0}]未处在Running或Stopped状态, 现在状态为[{1}]
 kvm\ host[uuid\:%s,\ name\:%s,\ ip\:%s]\ doesn't\ not\ support\ live\ snapshot.\ please\ stop\ vm[uuid\:%s]\ and\ try\ again = 
-failed\ to\ migrate\ VM = 迁移虚拟机失败
+failed\ to\ migrate\ VM,\ because\ %s = 迁移虚拟机失败，因为：{0}
 failed\ to\ update\ nic[vm\:%s]\ on\ kvm\ host[uuid\:%s,\ ip\:%s],because\ %s = 无法更新主机[uuid:{1}, ip:{2}] 虚拟机[vm：{0}]的网卡: {3}
 failed\ to\ attach\ nic[uuid\:%s,\ vm\:%s]\ on\ kvm\ host[uuid\:%s,\ ip\:%s],because\ %s,\ please\ try\ again\ or\ delete\ device[%s]\ by\ yourself = 无法将网卡[uuid:{0}, vm：{1}] 添加到主机[uuid:{2}, ip:{3}]，因为：{4}，请重新尝试或者自行删除设备[5]
 failed\ to\ attach\ nic[uuid\:%s,\ vm\:%s]\ on\ kvm\ host[uuid\:%s,\ ip\:%s],because\ %s = 无法将网卡[uuid:{0}, vm：{1}] 添加到主机[uuid:{2}, ip:{3}]，因为：{4}

conf/i18n_json/i18n_kvm.json

@@ -290,9 +290,9 @@
     "fileName": "src/main/java/org/zstack/kvm/KVMHost.java"
   },
   {
-    "raw": "failed to migrate VM",
-    "en_US": "failed to migrate VM",
-    "zh_CN": "迁移虚拟机失败",
+    "raw": "failed to migrate VM, because %s",
+    "en_US": "failed to migrate VM, because {0}",
+    "zh_CN": "迁移虚拟机失败，因为：{0}",
     "arguments": [],
     "fileName": "src/main/java/org/zstack/kvm/KVMHost.java"
   },

plugin/kvm/src/main/java/org/zstack/kvm/KVMHost.java

@@ -3198,7 +3198,7 @@ protected void scripts() {
                             @Override
                             public void success(MigrateVmResponse ret) {
                                 if (!ret.isSuccess()) {
-                                    ErrorCode err = err(HostErrors.FAILED_TO_MIGRATE_VM_ON_HYPERVISOR, "failed to migrate VM")
+                                    ErrorCode err = err(HostErrors.FAILED_TO_MIGRATE_VM_ON_HYPERVISOR, "failed to migrate VM, because %s", ret.getError())
                                             .withOpaque("response.error", ret.getError())
                                             .withOpaque("vm.uuid", vmUuid)
                                             .withOpaque("source.host.uuid", srcHostUuid)