JDK 11 modules do not compile in IntelliJ

The commons/jdk11 module fails to compile in IntelliJ, because the IDE doesn't parse <release>11</release> correctly when the parent has <release>8</release (IDEA-199818).

/home/dan/Work/infinispan/commons/jdk11/src/main/java/org/infinispan/commons/jdkspecific/CallerId.java:4:19
java: cannot find symbol
symbol: class StackWalker
location: class org.infinispan.commons.jdkspecific.CallerId