Fix port when the URL doesn't have port specified (#8049)

* fix port missingin oas 3 spec

* update samples

Author: wing328

modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultGenerator.java

@@ -769,7 +769,7 @@ private Map<String, Object> buildSupportFileBundle(List<Object> allOperations, L
         bundle.put("basePathWithoutHost", basePathWithoutHost);
         bundle.put("scheme", URLPathUtils.getScheme(url, config));
         bundle.put("host", url.getHost());
-        if (url.getPort() != 80 && url.getPort() != 443 ) {
+        if (url.getPort() != 80 && url.getPort() != 443 && url.getPort() != -1) {
             bundle.put("port", url.getPort());
         }
         bundle.put("contextPath", contextPath);

samples/openapi3/client/features/generate-alias-as-model/ruby-client/lib/petstore/configuration.rb

@@ -139,7 +139,7 @@ class Configuration
 
     def initialize
       @scheme = 'http'
-      @host = 'petstore.swagger.io:-1'
+      @host = 'petstore.swagger.io'
       @base_path = '/v2'
       @server_index = 0
       @server_operation_index = {}