qemu: snapshot: restart CPUs when recover from interrupted snapshot job

If we restart libvirtd while VM was doing external memory snapshot, VM's
state be updated to paused as a result of running a migration-to-file
operation, and then VM will be left as paused state. In this case we must
restart the VM's CPUs to resume it.
Signed-off-by: NWang King <king.wang@huawei.com>

src/qemu/qemu_process.c

@@ -3093,7 +3093,8 @@ qemuProcessRecoverJob(virQEMUDriverPtr driver,
               (job->asyncJob == QEMU_ASYNC_JOB_SAVE &&
                reason == VIR_DOMAIN_PAUSED_SAVE) ||
               (job->asyncJob == QEMU_ASYNC_JOB_SNAPSHOT &&
-               reason == VIR_DOMAIN_PAUSED_SNAPSHOT) ||
+               (reason == VIR_DOMAIN_PAUSED_SNAPSHOT ||
+                reason == VIR_DOMAIN_PAUSED_MIGRATION)) ||
               reason == VIR_DOMAIN_PAUSED_UNKNOWN)) {
              if (qemuProcessStartCPUs(driver, vm, conn,
                                       VIR_DOMAIN_RUNNING_UNPAUSED,