add CI tests for Nanos go and e2e tests

[wjhun]

Interface changes made in ops and lepton may lead to failures in the Nanos go-based tests (test/go, test/e2e) if these tests are not updated accordingly. Detecting these failures within ops CI tests can help resolve such regressions in Nanos prior to merging. This can be accomplished by pulling a Nanos tree and running both 'make -C test/go test' and 'make -C test/e2e test'.