Some modules disable execution default-test but not java8-test

ISPN-9959 introduced executions java8-test and java10-test, but some modules (e.g. jcache/tck-runner) only disable the default-test execution when they want to skip Surefire completely.

When profile java8-test is activated, Surefire tries to run the tests for those modules and fails:

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-surefire-plugin:3.0.0-M3:test (java8-test) on project infinispan-jcache-tck-runner: Illegal parallel='tests' -> [Help 1]