Fixes for faasd and better logging

Changelog for 0.5.0:

• PR #21 Fix invocations for faasd and #18 by @alexellis

Commits
aa14f05 Always return a name even when there is an error by @alexellis
124ae95 Remove debug line for invocations by @alexellis
dca4fa1 Update to Alpine 1.14 for shipping container by @alexellis
4fd848e Remove YAML file which is not required by @alexellis
f21d5e7 Fix #18 invocations failing without namespace by @alexellis

Generated by Derek