Counting server.log messages gives false positive test failure.

SubResourceWarningTest.testWarningMsg:59 reports false positive for test failure
because msgs in server.log are being counted. This methodology assumes a clean
server.log for each integration test run. This does not happen when running
a single test. The cmd to run a single test case is,

mvn clean verify \
-Dtest=SubResourceWarningTest -DfailIfNoTests=false \
-fn -Dserver.home=/home/rsearls/j1/wfly10/wildfly/dist/wildfly-12.0.0.Final

"verify" is a required maven goal. It runs the test. And -Dtest also runs the
test. This doubles the existing msg count in the server.log The result for 3 consecutive runs are a accumulated msg count. This causes the test to fail.

SubResourceWarningTest.testWarningMsg:59 Improper log WARNING count expected:<4> but was:<2>
SubResourceWarningTest.testWarningMsg:59 Improper log WARNING count expected:<6> but was:<2>
SubResourceWarningTest.testWarningMsg:59 Improper log WARNING count expected:<8> but was:<2>

Some other method should be used to determine test success.