Tweak the expected log message for ElytronTestCase

The changes in WFCORE-5027 introduced new attributes for the properties-realm. This causes org.wildfly.test.integration.vdx.standalone.ElytronTestCase to fail since it attempts to misconfigure a properties-realm and asserts that the log message shows the attributes that are allowed to be configured for a properties-realm. We need to update the expected log message to include the newly added attributes once the WildFly Core tag has been merged to WildFly. In the meantime, we can tweak the expected log message so that the test passes with the changes for WFCORE-5027.