Init test project of libguestfs.

Since libguestfs has a serial of commands.
Support libguestfs test will be helpful.

Signed-off-by: Yu Mingfei <yumingfei@cn.fujitsu.com>
virt: Add virsh_domblklist function to virsh module.

Signed-off-by: Yu Mingfei <yumingfei@cn.fujitsu.com>
virt: Add get_blk_devices&get_disk_devices function to VM class.

Signed-off-by: Yu Mingfei <yumingfei@cn.fujitsu.com>
virt-libguestfs: add configuration for virt-edit module.

Signed-off-by: Yu Mingfei <yumingfei@cn.fujitsu.com>
virt-libguestfs: add test module of virt-edit.

Signed-off-by: Yu Mingfei <yumingfei@cn.fujitsu.com>
virt: Add utils functions for libguestfs tests.

Signed-off-by: Yu Mingfei <yumingfei@cn.fujitsu.com>
libguestfs: Fixing spacing

Signed-off-by: Lucas Meneghel Rodrigues <lmr@redhat.com>
libguestfs: Misc pylint fixes

Signed-off-by: Lucas Meneghel Rodrigues <lmr@redhat.com>
libguestfs: Add update_config script

Signed-off-by: Lucas Meneghel Rodrigues <lmr@redhat.com>