Add support for 'console' output type of CodeNarc plugin. This fix https://github.com/gradle/gradle/issues/1481 . Although it is documented that CodeNarc plugin supports 'console' output type, that type is never implemented. This commit add 'console' TaskGeneratedSingleFile to CodeNarcReportsImpl, and adjust the options with which Ant codenarc task is called. To redirect Ant output to Gradle standard output in 'console' type, the lifecycleLogLevel of AntLogAdapter is changed to INFO.
Then, a unit test and an integration test are provided.