Travis tests on ubuntu:focal docker gets stalled on go tests

[ygorelik]

Current Behavior

All go UT tests on ubuntu:focal (20.04) VM and docker get passed, but tests.sh gets stalled in Travis tests.
All the gNMI UT tests (gnmi_tests.sh) on Travis pass.

Steps to Reproduce

Enable go tests in tests.sh and commit the code to git repository. Watch Travis test run.

Logs

*** Tue Sep 29 12:03:18 PDT 2020: tests.sh | CC: /usr/bin/cc
*** Tue Sep 29 12:03:18 PDT 2020: tests.sh | CXX: /usr/bin/c++
*** Tue Sep 29 12:03:18 PDT 2020: tests.sh | Running go samples
*** Tue Sep 29 12:03:18 PDT 2020: tests.sh | Executing: go run cgo_path/cgo_path.go

No output has been received in the last 10m0s, this potentially indicates a stalled build or something wrong with the build itself.
Check the details on how to adjust your build configuration on: https://docs.travis-ci.com/user/common-build-problems/#build-times-out-because-no-output-was-received

The build has been terminated

System Information

YDK-0.8.5 Travis tests on ubuntu:focal docker