Renamed **/*Spec.groovy to **/*Tests.groovy to better follow conventions

samples/cas/sample/src/integration-test/groovy/org/springframework/security/samples/cas/AbstractCasTests.groovy

@@ -25,7 +25,7 @@ import geb.spock.*
  *
  * @author Rob Winch
  */
-class BaseSpec extends GebReportingSpec {
+class AbstractCasTests extends GebReportingSpec {
 
     /**
      * All relative urls will be interpreted against this. The host can change based upon a system property. This

samples/cas/sample/src/integration-test/groovy/org/springframework/security/samples/cas/CasSampleProxyTests.groovy

@@ -32,7 +32,7 @@ import spock.lang.*
  * @author Rob Winch
  */
 @Stepwise
-class CasSampleProxySpec extends BaseSpec {
+class CasSampleProxyTests extends AbstractCasTests {
     HttpClient client = new HttpClient()
     @Shared String casServerUrl = LoginPage.url.replaceFirst('/login','')
     @Shared JettyCasService service = new JettyCasService().init(casServerUrl)

samples/cas/sample/src/integration-test/groovy/org/springframework/security/samples/cas/CasSampleTests.groovy

@@ -30,7 +30,7 @@ import spock.lang.Stepwise;
  * @author Rob Winch
  */
 @Stepwise
-class CasSampleSpec extends BaseSpec {
+class CasSampleTests extends AbstractCasTests {
     @Shared String casServerLogoutUrl = LoginPage.url.replaceFirst('/login','/logout')
 
     def 'access home page with unauthenticated user succeeds'() {