Check if the vm is alive before using hotpatch api by calling
virDomainObjCheckActive() to check vm id and calling
qemuDomainHotpatchCheckPid() to check vm pid.
Signed-off-by: Bihong Yu <yubihong@huawei.com>
Signed-off-by: AlexChen <alex.chen@huawei.com>
