qemu: Add sysprep test

Add sysprep tests for QEMU Windows guests:

1) Log into a guest
2) Clean guest with sysprep tools.
3) Boot guest up again.
4) Check that SID in guest has changed.

Changes from V1:
1. Update some code style issues.
2. Log guest ip address when guest boot up again.

Changes from v2:
Fix a bug for getting restart_timeout

Changes from v3:
Delete unused module and parameter.
Update fail message.
Signed-off-by: NFeng Yang <fyang@redhat.com>

qemu/tests/cfg/sysprep.cfg

+- sysprep:
+    only Windows
+    type = sysprep
+    virt_test_type = qemu
+    unattended_file = win7-64-autounattend.xml
+    tmp_path = C:\\
+    extend_vm = " vm2"
+    sysprep_cmd = c:\Windows\System32\sysprep\sysprep.exe /generalize /oobe /shutdown /unattend:%s

qemu/tests/sysprep.py

+import logging, os, re
+from virttest import utils_misc, env_process
+from autotest.client.shared import error
+
+
+@error.context_aware
+def run_sysprep(test, params, env):
+    """
+    KVM sysprep test:
+    1) Log into a guest
+    2) Clean guest with sysprep tools.
+    3) Boot guest up again.
+    4) Check that SID in guest has changed.
+
+    @param test: QEMU test object
+    @param params: Dictionary with the test parameters
+    @param env: Dictionary with test environment.
+    """
+
+    vm = env.get_vm(params["main_vm"])
+    vm.verify_alive()
+
+    timeout = float(params.get("login_timeout", 240))
+    session = vm.wait_for_login(timeout=timeout)
+    unattended_file = params.get("unattended_file")
+    unattended_file_link = os.path.join(test.virtdir,
+                                        unattended_file)
+    tmp_path = params.get("tmp_path", "c:\\")
+    vm.copy_files_to(unattended_file_link, tmp_path, verbose=True)
+    sysprep_cmd = params.get("sysprep_cmd")
+    check_sid_cmd = params.get("check_sid_cmd", "whoami /user")
+    extend_vm = params.get("extend_vm")
+    re_sid = params.get("re-sid", "(S[0-9-]{20,})")
+
+    vms = []
+    sids = {}
+    sid_same = []
+    error.context("Check guest's System ID.", logging.info)
+    output = session.cmd_output(check_sid_cmd, timeout=60)
+    try:
+        sid = re.findall(re_sid, output)[0]
+    except IndexError:
+        msg = "Fail to get guest's System ID. "
+        msg += "Output from check System ID command: %s" % output
+        raise error.TestFail(msg)
+    logging.info("VM guest System ID is: %s", sid)
+    sids[sid] = ["pre_%s" % vm.name]
+    file_dir = tmp_path + unattended_file
+    sysprep_cmd = sysprep_cmd % file_dir
+    error.context("Run sysprep command in guest. %s" % sysprep_cmd,
+                  logging.info)
+    session.sendline(sysprep_cmd)
+    error.context("Waiting guest power down.....", logging.info)
+    status = utils_misc.wait_for(vm.is_dead, timeout * 3, 3)
+    if not status:
+        raise error.TestFail("VM did not shutdown after sysprep command")
+    params['image_snapshot'] = "yes"
+    params['vms'] += extend_vm
+    restart_timeout = timeout * len(params['vms'].split()) * 2
+    for vm_i in params['vms'].split():
+        vm_params = params.object_params(vm_i)
+        env_process.preprocess_vm(test, vm_params, env, vm_i)
+        vm = env.get_vm(vm_i)
+        vm.verify_alive()
+        vms.append(vm)
+    for vm_i in vms:
+        session = vm_i.wait_for_login(timeout=restart_timeout)
+        vm_i_ip = vm_i.get_address()
+        logging.info("VM: %s got IP: %s", vm_i.name, vm_i_ip)
+        error.context("Check guest's System ID.", logging.info)
+        output = session.cmd_output(check_sid_cmd, timeout=60)
+        try:
+            sid = re.findall(re_sid, output)[0]
+        except IndexError:
+            msg = "Fail to get System ID of %s" % vm_i.name
+            msg += "Output from check System ID command: %s" % output
+            raise error.TestError(msg)
+        logging.info("VM:%s System ID is: %s", vm_i.name, sid)
+        if sid in sids.keys():
+            logging.error("VM: %s have duplicate System ID: %s",
+                           vm_i.name,
+                           sid)
+            sid_same.append(sid)
+            sids[sid].append(vm_i.name)
+        else:
+            sids[sid] = [vm_i.name]
+
+    if sid_same:
+        msg = ""
+        for sid in sid_same:
+            msg += "VM(s): %s have duplicate System ID: %s\n" % \
+                    (" ".join(sids[sid]), sid)
+        raise error.TestFail(msg)