DATACMNS-864 - Tweaks in tests after activation for Spring 5 builds.

After the Spring 5 build profile has been activated properly in Spring Data build [0], the test cases for RepositoryPopulators failed as there was only an explicit detection of Spring 4 to point the test to the right resource file. Removed the guard now as all supported versions can now use the same file.

Adapt to the stricter contract in Spring 5's MethodParameter in unit test for QuerydsPredicateArgumentResolver.

[0] 31df5de907

src/test/java/org/springframework/data/web/querydsl/QuerydslPredicateArgumentResolverUnitTests.java

@@ -254,7 +254,7 @@ public class QuerydslPredicateArgumentResolverUnitTests {
 	private static MethodParameter getMethodParameterFor(String methodName, Class<?>... args) throws RuntimeException {
 
 		try {
-			return new MethodParameter(Sample.class.getMethod(methodName, args), 0);
+			return new MethodParameter(Sample.class.getMethod(methodName, args), args.length == 0 ? -1 : 0);
 		} catch (NoSuchMethodException e) {
 			throw new RuntimeException(e);
 		}