Fix ordering of *contexParams

Per the implementation standard, the order in highest precedence is

 - static context params
 - context params
 - client context params

Author: dagnir

codegen/src/main/java/software/amazon/awssdk/codegen/poet/rules/EndpointResolverInterceptorSpec.java

@@ -148,16 +148,6 @@ private MethodSpec ruleParams() {
 
         b.addStatement("$T builder = $T.builder()", paramsBuilderClass(), endpointRulesSpecUtils.parametersClassName());
 
-        b.addStatement("setStaticContextParams(builder, executionAttributes.getAttribute($T.OPERATION_NAME))",
-                       AwsExecutionAttribute.class);
-
-        b.addStatement("setContextParams(builder, executionAttributes.getAttribute($T.OPERATION_NAME), context.request())",
-                       AwsExecutionAttribute.class);
-
-        if (hasClientContextParams()) {
-            b.addStatement("setClientContextParams(builder, executionAttributes)");
-        }
-
         Map<String, ParameterModel> parameters = model.getEndpointRuleSetModel().getParameters();
 
         parameters.forEach((n, m) -> {
@@ -201,6 +191,14 @@ private MethodSpec ruleParams() {
                            endpointRulesSpecUtils.rulesRuntimeClassName("AwsEndpointProviderUtils"), builtInFn);
         });
 
+        if (hasClientContextParams()) {
+            b.addStatement("setClientContextParams(builder, executionAttributes)");
+        }
+        b.addStatement("setContextParams(builder, executionAttributes.getAttribute($T.OPERATION_NAME), context.request())",
+                       AwsExecutionAttribute.class);
+        b.addStatement("setStaticContextParams(builder, executionAttributes.getAttribute($T.OPERATION_NAME))",
+                       AwsExecutionAttribute.class);
+
         b.addStatement("return builder.build()");
         return b.build();
     }