Add sourceSet for java under 17

Author: ngocnhan-tran1996

micrometer-osgi-test/build.gradle

@@ -26,6 +26,9 @@ dependencies {
 def testingBundle = tasks.register('testingBundle', Bundle) {
     archiveClassifier = 'tests'
     from sourceSets.test.output
+    if (javaLanguageVersion.asInt() < 17) {
+        sourceSet = sourceSets.test
+    }
     bundle {
         sourceSet = sourceSets.test
         bnd """\