network: resolve collections.ABC deprecation warning

Resolve python warning:
```
DeprecationWarning: Using or importing the ABCs from 'collections'
instead of from 'collections.abc' is deprecated since Python 3.3,
and in 3.10 it will stop working.
```

Change-Id: I5ead39425a4a7f203bf3dd0a53ea5b813eacc2bb
Signed-off-by: Eitan Raviv <eraviv@redhat.com>

network-suite-master/ovirtlib/syncutil.py

@@ -129,7 +129,7 @@ def re_run(exec_func, exec_func_args, count, interval):
 
 
 def _parse_args(exec_func_args):
-    if isinstance(exec_func_args, collections.Mapping):
+    if isinstance(exec_func_args, collections.abc.Mapping):
         kwargs = exec_func_args
         args = ()
     else: