start migration to transport version set

Author: jdconrad

server/src/main/java/org/elasticsearch/TransportVersion.java

@@ -16,6 +16,7 @@
 import org.elasticsearch.plugins.ExtensionLoader;
 
 import java.io.IOException;
+import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Collections;
 import java.util.List;
@@ -195,14 +196,24 @@ private static class VersionsHolder {
                 .orElse(Collections.emptyList());
 
             if (extendedVersions.isEmpty()) {
-                ALL_VERSIONS = TransportVersions.DEFINED_VERSIONS;
+                //ALL_VERSIONS = TransportVersions.DEFINED_VERSIONS;
+                // TODO: remove for testing
+                ALL_VERSIONS = new ArrayList<>(TransportVersions.DEFINED_VERSIONS);
+                ALL_VERSIONS.add(new TransportVersion(9114000));
+                ALL_VERSIONS.add(new TransportVersion(9115000));
+                ALL_VERSIONS.add(new TransportVersion(8841063));
+                ALL_VERSIONS.add(new TransportVersion(9112001));
+                ALL_VERSIONS.add(new TransportVersion(9116000));
+                ALL_VERSIONS.add(new TransportVersion(9117000));
+                ALL_VERSIONS.add(new TransportVersion(9118000));
+                // TODO: end testing
             } else {
                 ALL_VERSIONS = Stream.concat(TransportVersions.DEFINED_VERSIONS.stream(), extendedVersions.stream()).sorted().toList();
             }
 
             ALL_VERSIONS_MAP = ALL_VERSIONS.stream().collect(Collectors.toUnmodifiableMap(TransportVersion::id, Function.identity()));
 
-            CURRENT = ALL_VERSIONS.getLast();
+            CURRENT = new TransportVersion(9118000); // TODO: fix - ALL_VERSIONS.getLast();
         }
     }
 }