Add ability to specify global zap logger With labels

[lanzafame]

My thoughts on how this would work are as follows, there would be a GOLOG_LOG_LABELS env var that takes a comma-separated list of key-value pairs, i.e. GOLOG_LOG_LABELS="app,example_app,dc,sjc-1" this env var would be processed in configFromEnv function along with other env var which would allow for all dependencies of the top-level application to receive these labels.