Added execute util

It is needed to run OS commands. It uses
oslo processutils. It is just a copy of the
same method in openstack/ironic except
using rootwrap was removed.

Change-Id: I2efede22b1fa25febe91879c0fefcdfc7f3d1dd5

ironic_python_agent/utils.py

@@ -13,9 +13,16 @@ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
 """
+
 import collections
 import ordereddict
 
+from ironic_python_agent.openstack.common import gettextutils as gtu
+from ironic_python_agent.openstack.common import log as logging
+from ironic_python_agent.openstack.common import processutils
+
+LOG = logging.getLogger(__name__)
+
 
 def get_ordereddict(*args, **kwargs):
     """A fix for py26 not having ordereddict."""
@@ -23,3 +30,13 @@ def get_ordereddict(*args, **kwargs):
         return collections.OrderedDict(*args, **kwargs)
     except AttributeError:
         return ordereddict.OrderedDict(*args, **kwargs)
+
+
+def execute(*cmd, **kwargs):
+    """Convenience wrapper around oslo's execute() method."""
+    result = processutils.execute(*cmd, **kwargs)
+    LOG.debug(gtu._('Execution completed, command line is "%s"'),
+              ' '.join(cmd))
+    LOG.debug(gtu._('Command stdout is: "%s"') % result[0])
+    LOG.debug(gtu._('Command stderr is: "%s"') % result[1])
+    return result