Revert "Fix test so it works on various OS’s"

This reverts commit ad6d1bf0184b39fd6823c9ed54b4d754909a7ae2.

Conflicts:
	subprojects/ear/src/integTest/groovy/org/gradle/plugins/ear/EarPluginIntegrationTest.groovy
Fix test so it compares generated application.xml with platform line endings
Spockified test
Tidied up test coverage for using supplied ear content