[WFCORE-7076] Check required installation metadata is present before registering installation-manager subsystem

[spyrkob]

Issue: https://issues.redhat.com/browse/WFCORE-7076

[spyrkob]

@yersan I tried to implement your suggestion about changing ModelControllerServiceInitialization to pass the PathManager to the initializer. It ended up with a lot of other changes - could you take a look at the PR if that's roughly what you had in mind?

[wildfly-ci]

Core -> Full Integration Build 14377 outcome was FAILURE using a merge of c13f1ee
Summary: Exit code 1 (Step: Build core (Maven)) (new) Build time: 00:02:27

[wildfly-ci]

Core -> Full Integration Build 14080 outcome was FAILURE using a merge of c13f1ee
Summary: Exit code 1 (Step: Build core (Maven)) (new) Build time: 00:02:53

[wildfly-ci]

Core -> WildFly Preview Integration Build 14157 outcome was FAILURE using a merge of c13f1ee
Summary: Exit code 1 (Step: Build core (Maven)) (new) Build time: 00:02:05