utils_test.HostStress: Set default value for params.

Signed-off-by: Yu Mingfei <yumingfei@cn.fujitsu.com>
utils_test: Pass correct args to control file.

Signed-off-by: Yu Mingfei <yumingfei@cn.fujitsu.com>
utils_test.run_autotest: Support to pass args for control.

Signed-off-by: Yu Mingfei <yumingfei@cn.fujitsu.com>
env_process: Add filter for svirt_install in checking of vm.exists().

Signed-off-by: Dongsheng Yang <yangds.fnst@cn.fujitsu.com>
virt: Fix a bug in set_kernel_console

Signed-off-by: Li Yang <liyang.fnst@cn.fujitsu.com>
virttest.virsh: Update option name and description for create

Signed-off-by: Wayne Sun <gsun@redhat.com>
utils_test.libvirt: Support block device for create_disk_xml.

Signed-off-by: Yu Mingfei <yumingfei@cn.fujitsu.com>
Merge pull request #1706 from waynesun09/create_update

virttest.virsh: Update option name and description for create
Merge pull request #1703 from yangdongsheng/svirt_install

env_process: Add filter for svirt_install in checking of vm.exists().
env_process: Fix a wrong logic in checking of vm.exists().

Signed-off-by: Dongsheng Yang <yangds.fnst@cn.fujitsu.com>
Merge pull request #1704 from liyangfnst/console_fix

virt: Fix a bug in set_kernel_console
Merge pull request #1708 from yangdongsheng/env_process

env_process: Fix a wrong logic in checking of vm.exists().
Merge pull request #1707 from yumingfei/attach_block_device

utils_test.libvirt: Support block device for create_disk_xml.
libvirt_vm: Resume vm in destroy() when vm is paused.

There are some cases need to suspend vm, and in postprocess,
we need to kill vm by vm.destroy(). But when vm is paused,
vm.destroy() will wait 240s to login it. Then find it is not
loginable and kill it with virsh.destroy().

We waste 240s at this case, we should check the state of vm
before we login it.

Signed-off-by: Dongsheng Yang <yangds.fnst@cn.fujitsu.com>
virt: Fix a bug in cgroup module

Signed-off-by: Li Yang <liyang.fnst@cn.fujitsu.com>
Merge pull request #1714 from liyangfnst/cgroup_fix

virt: Fix a bug in cgroup module
Merge pull request #1710 from yangdongsheng/destroy

libvirt_vm: Resume vm in destroy() when vm is paused.
virttest.utils_test: Init subtest_dir in run_virt_sub_test

Init subtest_dir to None otherwise, it will report the variable
referenced before assignment.

Signed-off-by: Yiqiao Pu <ypu@redhat.com>
Merge pull request #1664 from yumingfei/migration_enhancements

Utils_test: Migration enhancements
add debug() function