Refactor integration test class names and update javadoc

src/test/java/org/openepics/names/docker/HealthcheckIT.java

src/test/java/org/openepics/names/docker/NamesIT.java

src/test/java/org/openepics/names/docker/ReportIT.java

...a/org/openepics/names/docker/StructuresDeviceGroupIT.java

...va/org/openepics/names/docker/StructuresDeviceTypeIT.java

...va/org/openepics/names/docker/StructuresDisciplineIT.java

...ava/org/openepics/names/docker/StructuresSubsystemIT.java

...a/org/openepics/names/docker/StructuresSystemGroupIT.java

...t/java/org/openepics/names/docker/StructuresSystemIT.java

.../openepics/names/docker/complex/NamesInstanceIndexIT.java

...ava/org/openepics/names/docker/complex/NamesLegacyIT.java

...s/names/docker/complex/NamesLegacyStructuresDeleteIT.java

...s/names/docker/complex/NamesLegacyStructuresUpdateIT.java

...a/org/openepics/names/docker/complex/NamesMultipleIT.java

...rg/openepics/names/docker/complex/StructuresLevel3IT.java

.../openepics/names/docker/complex/StructuresMultipleIT.java

src/test/resources/INTEGRATIONTEST_DOCKER_RUN.md