SOLR-6849: And really fix it this time

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1645895 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/solr/core/src/test/org/apache/solr/cloud/TestModifyConfFiles.java b/solr/core/src/test/org/apache/solr/cloud/TestModifyConfFiles.java
index 3f96759..1ab3af7 100644
--- a/solr/core/src/test/org/apache/solr/cloud/TestModifyConfFiles.java
+++ b/solr/core/src/test/org/apache/solr/cloud/TestModifyConfFiles.java
@@ -62,7 +62,7 @@
       client.request(request);
       fail("Should have caught exception");
     } catch (Exception e) {
-      assertEquals(e.getMessage(), "No file name specified for write operation.");
+      assertThat(e.getMessage(), containsString("No file name specified for write operation."));
     }
 
     params.set("op", "write");
@@ -73,7 +73,7 @@
       client.request(request);
       fail("Should have caught exception");
     } catch (Exception e) {
-      assertEquals(e.getMessage(), "Can not access: bogus.txt");
+      assertThat(e.getMessage(), containsString("Can not access: bogus.txt"));
     }
 
     try {