Ignore flawed test until it's rewritten to test what it's supposed to

Signed-off-by: Gabriel Roldan <groldan@boundlessgeo.com>

src/datastore/src/test/java/org/locationtech/geogig/geotools/data/stresstest/DataStoreConcurrencyTest.java

@@ -34,6 +34,7 @@
 import org.geotools.feature.simple.SimpleFeatureBuilder;
 import org.junit.After;
 import org.junit.Before;
+import org.junit.Ignore;
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.rules.TemporaryFolder;
@@ -180,6 +181,7 @@ public void testConcurrentReadsWithIndex() throws Exception {
         }
     }
 
+    @Ignore //this test is flawed (the test itself), ignoring until it's fixed
     @Test
     public void testConcurrentEditsAndReads() throws Exception {