HZ_LICENSEKEY should not be defined if hazelcast.licenseKey and hazelcast.licenseKeySecretName are not defined

[nosan]

In Cloud, we are currently testing nlc image and we found an issue:

2021-11-03 15:17:56,708 [ INFO[] [main[] [c.h.i.c.AbstractConfigLocator[]: Using configuration file at /data/hazelcast/hazelcast.yaml
Exception in thread "main" java.lang.StringIndexOutOfBoundsException: begin 0, end 5, length 0
    at java.base/java.lang.String.checkBoundsBeginEnd(String.java:3319)
    at java.base/java.lang.String.substring(String.java:1874)
    at com.hazelcast.internal.config.override.ExternalConfigurationOverride.lambda$overwrite$3(ExternalConfigurationOverride.java:89)
    at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195)
    at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177)
    at 

This happened because of the empty env variable HZ_LICESENKEY.

[hasancelik]

related to hazelcast/hazelcast#19849