[Truffle] Implemented TrueClass#hash and FalseClass#hash.

Author: nirvdrum

core/src/main/java/org/jruby/truffle/nodes/core/KernelNodes.java

@@ -935,6 +935,11 @@ public int hash(double value) {
             return Double.valueOf(value).hashCode();
         }
 
+        @Specialization
+        public int hash(boolean value) {
+            return Boolean.valueOf(value).hashCode();
+        }
+
         @Specialization
         public int hash(RubyBasicObject self) {
             return self.hashCode();