Move o.e.core.tests.net BREE to Java 11.

Change-Id: Ia53dbc7a2de6c14344a72d899cdcf8610b67ac09
Reviewed-on: https://git.eclipse.org/r/c/platform/eclipse.platform.team/+/179795
Tested-by: Platform Bot <platform-bot@eclipse.org>
Reviewed-by: Alexander Kurtakov <akurtako@redhat.com>
diff --git a/tests/org.eclipse.core.tests.net/.classpath b/tests/org.eclipse.core.tests.net/.classpath
index eca7bdb..a42a828 100644
--- a/tests/org.eclipse.core.tests.net/.classpath
+++ b/tests/org.eclipse.core.tests.net/.classpath
@@ -1,7 +1,11 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <classpath>
-	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8"/>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-11"/>
 	<classpathentry kind="con" path="org.eclipse.pde.core.requiredPlugins"/>
-	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="src" path="src">
+		<attributes>
+			<attribute name="test" value="true"/>
+		</attributes>
+	</classpathentry>
 	<classpathentry kind="output" path="bin"/>
 </classpath>
diff --git a/tests/org.eclipse.core.tests.net/.settings/org.eclipse.jdt.core.prefs b/tests/org.eclipse.core.tests.net/.settings/org.eclipse.jdt.core.prefs
index 7488e48..e0f0862 100644
--- a/tests/org.eclipse.core.tests.net/.settings/org.eclipse.jdt.core.prefs
+++ b/tests/org.eclipse.core.tests.net/.settings/org.eclipse.jdt.core.prefs
@@ -9,9 +9,9 @@
 org.eclipse.jdt.core.classpath.multipleOutputLocations=enabled
 org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
 org.eclipse.jdt.core.compiler.codegen.methodParameters=do not generate
-org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.8
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=11
 org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
-org.eclipse.jdt.core.compiler.compliance=1.8
+org.eclipse.jdt.core.compiler.compliance=11
 org.eclipse.jdt.core.compiler.debug.lineNumber=generate
 org.eclipse.jdt.core.compiler.debug.localVariable=generate
 org.eclipse.jdt.core.compiler.debug.sourceFile=generate
@@ -24,6 +24,7 @@
 org.eclipse.jdt.core.compiler.problem.deprecationWhenOverridingDeprecatedMethod=disabled
 org.eclipse.jdt.core.compiler.problem.discouragedReference=ignore
 org.eclipse.jdt.core.compiler.problem.emptyStatement=ignore
+org.eclipse.jdt.core.compiler.problem.enablePreviewFeatures=disabled
 org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
 org.eclipse.jdt.core.compiler.problem.fallthroughCase=ignore
 org.eclipse.jdt.core.compiler.problem.fatalOptionalError=enabled
@@ -48,6 +49,7 @@
 org.eclipse.jdt.core.compiler.problem.parameterAssignment=ignore
 org.eclipse.jdt.core.compiler.problem.possibleAccidentalBooleanAssignment=ignore
 org.eclipse.jdt.core.compiler.problem.rawTypeReference=warning
+org.eclipse.jdt.core.compiler.problem.reportPreviewFeatures=warning
 org.eclipse.jdt.core.compiler.problem.specialParameterHidingField=disabled
 org.eclipse.jdt.core.compiler.problem.staticAccessReceiver=warning
 org.eclipse.jdt.core.compiler.problem.suppressWarnings=enabled
@@ -69,6 +71,7 @@
 org.eclipse.jdt.core.compiler.problem.unusedParameterWhenOverridingConcrete=disabled
 org.eclipse.jdt.core.compiler.problem.unusedPrivateMember=warning
 org.eclipse.jdt.core.compiler.problem.varargsArgumentNeedCast=warning
-org.eclipse.jdt.core.compiler.source=1.8
+org.eclipse.jdt.core.compiler.release=enabled
+org.eclipse.jdt.core.compiler.source=11
 org.eclipse.jdt.core.incompatibleJDKLevel=ignore
 org.eclipse.jdt.core.incompleteClasspath=error
diff --git a/tests/org.eclipse.core.tests.net/META-INF/MANIFEST.MF b/tests/org.eclipse.core.tests.net/META-INF/MANIFEST.MF
index f0df4cd..dd5644a 100644
--- a/tests/org.eclipse.core.tests.net/META-INF/MANIFEST.MF
+++ b/tests/org.eclipse.core.tests.net/META-INF/MANIFEST.MF
@@ -2,14 +2,14 @@
 Bundle-ManifestVersion: 2
 Bundle-Name: Net Tests Plug-in
 Bundle-SymbolicName: org.eclipse.core.tests.net
-Bundle-Version: 1.4.700.qualifier
+Bundle-Version: 1.5.0.qualifier
 Bundle-Activator: org.eclipse.core.tests.net.Activator
 Bundle-Vendor: Eclipse.org
 Require-Bundle: org.eclipse.core.runtime;bundle-version="[3.3.0,4.0.0)",
  org.eclipse.core.net;bundle-version="[1.0.0,2.0.0)",
  org.junit
 Bundle-ActivationPolicy: lazy
-Bundle-RequiredExecutionEnvironment: JavaSE-1.8
+Bundle-RequiredExecutionEnvironment: JavaSE-11
 Eclipse-BundleShape: dir
 Export-Package: org.eclipse.core.tests.net
 Automatic-Module-Name: org.eclipse.core.tests.net
diff --git a/tests/org.eclipse.core.tests.net/pom.xml b/tests/org.eclipse.core.tests.net/pom.xml
index 17d8f2e..3780db4 100644
--- a/tests/org.eclipse.core.tests.net/pom.xml
+++ b/tests/org.eclipse.core.tests.net/pom.xml
@@ -18,7 +18,7 @@
   </parent>
   <groupId>org.eclipse.core</groupId>
   <artifactId>org.eclipse.core.tests.net</artifactId>
-  <version>1.4.700-SNAPSHOT</version>
+  <version>1.5.0-SNAPSHOT</version>
   <packaging>eclipse-test-plugin</packaging>
 
   <properties>