Loads a YAML-file of key-value pairs.
Colon and whitespace ": " separate key and value (one per line). The hash tag "#" starts a single-line comment.
Example:
jobmanager.rpc.address: localhost # network address for communication with the job manager
jobmanager.rpc.port : 6123 # network port to connect to for communication with the job manager
taskmanager.rpc.port : 6122 # network port the task manager expects incoming IPC connections
This does not span the whole YAML specification, but only the *syntax* of simple YAML key-value pairs (see issue
#113 on GitHub). If at any point in time, there is a need to go beyond simple key-value pairs syntax
compatibility will allow to introduce a YAML parser library.