VOL-2241: Python 3 migration
- rename adapter class file and remove unneeded __init__ to make imports work without major rearrange
- venv and Dockerfile fixups needed for new pyvoltha (cannot install old first)
- clean up yaml config file as it contained empty entries that failed to parse
- clean up imports
- remove itervalues iter*
- convert to list() as needed
- test with python 3.6
- skip non-dict items in tcont loop
- update to voltha-protos 2.1.0
- migrate socketserver and simplehttpserver to python3 import
Change-Id: Id8efa72b6796a3055b1927716503a33544bb6548
diff --git a/python/adapters/brcm_openomci_onu/heartbeat.py b/python/adapters/brcm_openomci_onu/heartbeat.py
index ffe4b69..386d0ab 100644
--- a/python/adapters/brcm_openomci_onu/heartbeat.py
+++ b/python/adapters/brcm_openomci_onu/heartbeat.py
@@ -12,6 +12,7 @@
# See the License for the specific language governing permissions and
# limitations under the License.
+from __future__ import absolute_import
import structlog
from twisted.internet import reactor
from twisted.internet.defer import inlineCallbacks