Extend logging functionality by log-prefix property

[hsekowski-splunk]

Extend logging functionality by log-prefix property
Setter would be used to set it by ucc-gen with TA name (globalConfig meta.name) lowercased (if has to be lowercase?) - if automated or hardcoded by TA developer.
Getter would be used to get the value to be used for troubleshooting/monitoring.

[artemrys]

This is the beginning #278.