Ignoring two test cases that attempt to use network (Closes: #946306)

debian/patches/skip-network-tests.patch

@@ -84,3 +84,27 @@ Author: Andrius Merkys <merkys@debian.org>
      @Test
      public void testApacheHttpClient() throws Exception {
          final URL url = new URL("http://schema.org/");
+--- a/core/src/test/java/com/github/jsonldjava/core/LocalBaseTest.java
++++ b/core/src/test/java/com/github/jsonldjava/core/LocalBaseTest.java
+@@ -8,11 +8,13 @@
+ import java.io.Reader;
+ import java.nio.charset.Charset;
+ 
++import org.junit.Ignore;
+ import org.junit.Test;
+ 
+ import com.github.jsonldjava.utils.JsonUtils;
+ 
+ public class LocalBaseTest {
++    @Ignore("Requires network access")
+     @Test
+     public void testMixedLocalRemoteBaseRemoteContextFirst() throws Exception {
+ 
+@@ -34,6 +36,7 @@
+         assertEquals(expanded, output);
+     }
+ 
++    @Ignore("Requires network access")
+     @Test
+     public void testMixedLocalRemoteBaseLocalContextFirst() throws Exception {
+