#1550: fix for (usual case) when maven username and password not set
#1550: fix for (usual case) when maven username and password not set

HaStr/kieker,kieker-monitoring/kieker,kieker-monitoring/kieker,kieker-monitoring/kieker,kieker-monitoring/kieker,leadwire-apm/leadwire-javaagent,HaStr/kieker,leadwire-apm/leadwire-javaagent,kieker-monitoring/kieker,HaStr/kieker,HaStr/kieker,HaStr/kieker