Enable boot delegation in OSGi reflection tests

This allows them to run under JDK10.

The specific problem was resolving the
`@jdk.internal.HotSpotInstrinsicCandidate` annotation on
`Object.hashCode`, which happens when runtime reflection
loads the class symbol for Object.

Related docs:

https://ops4j1.jira.com/wiki/spaces/PAXEXAM4/pages/54263890/Configuration+Options#ConfigurationOptions-bootDelegationPackages
https://ops4j1.jira.com/wiki/spaces/paxrunner/pages/11665431/Boot+delegation+packages

Author: retronym

build.sbt

@@ -645,6 +645,7 @@ def osgiTestProject(p: Project, framework: ModuleID) = p
       )
     },
     Keys.test in Test := (Keys.test in Test).dependsOn(packageBin in Compile).value,
+    Keys.testOnly in Test := (Keys.testOnly in Test).dependsOn(packageBin in Compile).evaluated,
     testOptions += Tests.Argument(TestFrameworks.JUnit, "-a", "-v", "-q"),
     unmanagedSourceDirectories in Test := List((baseDirectory in ThisBuild).value / "test" / "osgi" / "src"),
     unmanagedResourceDirectories in Compile := (unmanagedSourceDirectories in Test).value,

test/osgi/src/ScalaOsgiHelper.scala

@@ -20,7 +20,11 @@ trait ScalaOsgiHelper {
 
   def standardOptions: Array[exam.Option]  = {
     val bundles = (allBundleFiles map makeBundle)
-    bundles ++ Array[exam.Option](junitBundles())
+    bundles ++ Array[exam.Option](junitBundles(), bootDelegationPackages(
+      "sun.*",
+      "com.sun.*",
+      "jdk.*"
+    ))
     // to change the local repo used (for some operations, but not all -- which is why I didn't bother):
     // systemProperty("org.ops4j.pax.url.mvn.localRepository").value(sys.props("maven.repo.local")))
   }