Check that all compactions are system compactions in the wait condition

Noticed that one of the tests failed the assertion, causing the test
to fail instead of retrying the wait loop.

Author: dlmarion

test/src/main/java/org/apache/accumulo/test/functional/CompactionIT.java

@@ -997,9 +997,9 @@ private void testCancelUserCompactionTimeout(boolean timeout) throws Exception {
         Wait.waitFor(() -> {
           var tabletMeta = ((ClientContext) client).getAmple().readTablet(extent);
           var externalCompactions = tabletMeta.getExternalCompactions();
-          assertTrue(externalCompactions.values().stream()
-              .allMatch(ec -> ec.getKind() == CompactionKind.SYSTEM));
-          return externalCompactions.size() == 1;
+          boolean allECAreSystem = externalCompactions.values().stream()
+              .allMatch(ec -> ec.getKind() == CompactionKind.SYSTEM);
+          return allECAreSystem && externalCompactions.size() == 1;
         }, Wait.MAX_WAIT_MILLIS, 10);
 
         // Wait for the user compaction to now run after the system finishes