Use monitor.protocol to detect QMP and other QMP  monitor changes.
Signed-off-by: NLukáš Doktor <ldoktor@redhat.com>

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

This patch mainly does following improvements:

Update the method to check memory from check different ways
for different OS to check the memory change in the test which may
works for both Windows and Linux.

Add a param to check if run sub test to make the operation of
separate evict and enlarge cases easier.
Signed-off-by: NYiqiao Pu <ypu@redhat.com>

Confirm the memory status after sub tests from both monitor and
inside guests.

changes from v1:
  - error message update
Signed-off-by: NYiqiao Pu <ypu@redhat.com>

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

This test script has no error context and test step, this patch adds
them, and update some logging message.

Changes from V2:
 * Update docstring and error context message.
Signed-off-by: NQingtang Zhou <qzhou@redhat.com>

Make the free memory check command configurable.

changes from v1:
  - Add the Windows guest memory judge code as the value get from
    windows should charge with different method.
Signed-off-by: NYiqiao Pu <ypu@redhat.com>

This patch benefits from the better error message when key is missing
in config params. Instead of custom handling of missing param it
uses params[] directly.

I modified those params, where I was 100% certain that they are
required and doesn't have default value:
 * val = params.get(..) followed by if not val: raise...
 * int(params.get(...))
 * params.get(...).split()
 * commands which require string (eg. session.cmd(params.get(...)))

I didn't test all the tests before and after in order to verify
possible typos but I used pylint before and after, watching for
new errors (code rate before and after).
Signed-off-by: NLukáš Doktor <ldoktor@redhat.com>

As part of our changes from kvm -> qemu.
Signed-off-by: NLucas Meneghel Rodrigues <lmr@redhat.com>

A frequent request we've got from users is that the name
'kvm' makes assumptions that are not true for a lot of
the use cases of the test suite. Then let's rename
the subtest 'kvm' to 'qemu', making it more accurate.
Signed-off-by: NLucas Meneghel Rodrigues <lmr@redhat.com>

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

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