Support Fee-1.0 XML parser in all environments (#3007)

Add the Fee-1.0 schema in production, allowing the requests with this
extension to be parsed. This allows us to test this extension before hand.

The announcement of this extension in greeting is controlled by a
feature flag in ProtocolDefinition.java. As long as it is not announced,
we do not expect real customers to use this extension.

Author: weiminyu

core/src/main/java/google/registry/model/eppcommon/EppXmlTransformer.java

@@ -14,7 +14,6 @@
 
 package google.registry.model.eppcommon;
 
-import static com.google.common.collect.ImmutableList.toImmutableList;
 import static java.nio.charset.StandardCharsets.UTF_8;
 
 import com.google.common.annotations.VisibleForTesting;
@@ -28,7 +27,6 @@
 import google.registry.model.eppinput.EppInput;
 import google.registry.model.eppoutput.EppOutput;
 import google.registry.model.eppoutput.EppResponse;
-import google.registry.util.RegistryEnvironment;
 import google.registry.xml.ValidationMode;
 import google.registry.xml.XmlException;
 import google.registry.xml.XmlTransformer;
@@ -71,13 +69,9 @@ public class EppXmlTransformer  {
   private static final XmlTransformer OUTPUT_TRANSFORMER =
       new XmlTransformer(getSchemas(), EppOutput.class);
 
+  // TODO(b/159033801): remove method and inline ALL_SCHEMA.
   @VisibleForTesting
   public static ImmutableList<String> getSchemas() {
-    if (RegistryEnvironment.get().equals(RegistryEnvironment.PRODUCTION)) {
-      return ALL_SCHEMAS.stream()
-          .filter(s -> !NON_PROD_SCHEMAS.contains(s))
-          .collect(toImmutableList());
-    }
     return ALL_SCHEMAS;
   }
 

core/src/test/java/google/registry/model/eppcommon/EppXmlTransformerTest.java

@@ -82,11 +82,11 @@ void testSchemas_inNonProduction_includesFee1Point0() {
   }
 
   @Test
-  void testSchemas_inProduction_skipsFee1Point0() {
+  void testSchemas_inProduction_includesFee1Point0() {
     var currentEnv = RegistryEnvironment.get();
     try {
       RegistryEnvironment.PRODUCTION.setup();
-      assertThat(EppXmlTransformer.getSchemas()).doesNotContain("fee-std-v1.xsd");
+      assertThat(EppXmlTransformer.getSchemas()).contains("fee-std-v1.xsd");
     } finally {
       currentEnv.setup();
     }