Fix early sourceSets access in spring-io plugin

https://build.spring.io/browse/INT-FATS5IC-46

SI places XML configs alongside with test classes for better navigation from IDE.
For this purpose we configure  `sourceSets.test.resources` for `src/test/java` as well.

Looks like `spring-io-0.0.6` read such a configuration very early and we end up with a default value for `resources`.

* Moving `sourceSets` before applying `spring-io` plugin makes everything working again

build.gradle

@@ -61,6 +61,14 @@ subprojects { subproject ->
 	apply plugin: 'jacoco'
 	apply plugin: 'checkstyle'
 
+	sourceSets {
+		test {
+			resources {
+				srcDirs = ['src/test/resources', 'src/test/java']
+			}
+		}
+	}
+
 	if (project.hasProperty('platformVersion') && !(subproject.name ==~ /.*-bom/)) {
 		apply plugin: 'spring-io'
 
@@ -143,14 +151,6 @@ subprojects { subproject ->
 		}
 	}
 
-	sourceSets {
-		test {
-			resources {
-				srcDirs = ['src/test/resources', 'src/test/java']
-			}
-		}
-	}
-
 	jacoco {
 		toolVersion = "0.7.8"
 	}