Build log4shell w/out linking to MUSL C library

[hartzell]

Build log4shell w/ CGO_ENABLED=0 enabled so that the resulting binary isn't linked to Alpine's MUSL C library, resulting in a binary that runs on CentOS.

I won't be able to sign the CDA, so this is another "convene a tiger team and reimplement this change" kind of thing.

[CLAassistant]

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[breadchris]

@hartzell thanks for another one! I will push a patch here soon that addresses the two PRs you have made. I'll close them out once I address them.

Thanks for the help!

[breadchris]

see #386