qemu.tests.cfg: Disable readonly disk for ide and ahci disks

This is not support for ide and ahci disks.

Signed-off-by: Yiqiao Pu <ypu@redhat.com>
qemu.tests.cfg: Disable migrate.unix on RHEL5 host

migrate.unix protocol only support from RHEL6, so disable it on RHEL5 host.

Signed-off-by: Shuping Cui <scui@redhat.com>
qemu.tests: Add clean up operations after tests in ksm_base

Quit ksm_overcommit_guest and turn on swap after test otherwise following
cases using this vm may failed because out of memory.

Also fix a small mistake in test steps.

Signed-off-by: Yiqiao Pu <ypu@redhat.com>
qemu.tests: add new test block_hotplug_check

changes from v1:
    add windows guest support;

changes from v2:
    remove extra image params in cfg and generate it by script
    fix issue that failed to check device id at rhel7 host
    limited test on Host_RHEL
changes form v3:
    fix typo error
    fix pep8 isssue

Signed-off-by: Xu Tian <xutian@redhat.com>
Merge pull request #60 from spcui/migrate_fix

qemu.tests.cfg: Disable migrate.unix on RHEL5 host
Merge pull request #62 from ypu/ksm_base

qemu.tests: Add clean up operations after tests in ksm_base
Merge pull request #51 from ypu/readonly_disk

qemu.tests.cfg: Disable readonly disk for ide and ahci disks
Merge pull request #12 from xutian/block_hotplug_check

qemu.tests: add new test block_hotplug_check
qemu.tests.qemu_img: Support gluster

Signed-off-by: Feng Yang <fyang@redhat.com>