ESS snapshot smoketest

[carsonip]

1. There is no smoketest coverage on ESS APM snapshot currently. Add it back.
2. We have coverage on latest ESS release through basic-upgrade only. We do not test new ESS deployments. Check if that is needed.

[marclop]

@carsonip, @simitt looking at our smoke tests, I can see we're using SNAPSHOT builds. Is this issue just outdated?

[simitt]

I remember Carson working on some smoke test improvements a while ago, so this might indeed be fixed. Closing for now, if Carson has more to add, we can reopen.