periodic-voltha-test-bbsim-2.11 intermittent failure

15:22:49  Step 3/6 : RUN wget -O - https://github.com/opencord/voltctl/releases/download/v1.6.1/voltctl-1.6.1-linux-amd64 > /usr/bin/voltctl
15:22:49   ---> Running in 4f73244805ab
15:22:49  Connecting to github.com (192.30.255.113:443)
15:22:49  wget: note: TLS certificate validation not implemented
15:22:49  wget: server returned error: HTTP/1.1 404 Not Found
15:22:49  The command '/bin/sh -c wget -O - https://github.com/opencord/voltctl/releases/download/v1.6.1/voltctl-1.6.1-linux-amd64 > /usr/bin/voltctl' returned a non-zero code: 1
15:22:49  Makefile:834: recipe for target 'voltctl-docker-image-build' failed
15:22:49  make: *** [voltctl-docker-image-build] Error 1
15:22:49  make: Leaving directory '/w/workspace/periodic-voltha-test-bbsim-2.11/voltha-system-tests'

15:29:48  ------------------------------------------------------------------------------
15:30:56  Sanity E2E Test for OLT/ONU on POD With Core Fail and Restart :: D... | FAIL |
15:30:56  Setup failed:
15:30:56  Keyword 'Validate Cleanup In ETCD' failed after retrying for 1 minute. The last error was: Stale Openonu Data in Etcd!
15:30:56  ------------------------------------------------------------------------------
15:30:56  Verify OLT Soft Reboot :: Test soft reboot of the OLT using voltct... | FAIL |
15:30:56  Critical failure occurred and exit-on-failure mode is in use.