Fix invoke plugin path issue. Move default gen source path.

Author: camporter

gen/src/main/java/com/softlayer/api/gen/Main.java

@@ -15,6 +15,7 @@
 public class Main {
 
     protected static final String METADATA_URL = "https://api.softlayer.com/metadata/v3.1";
+    protected static final String DEFAULT_SOURCE_PATH = "../src/main/java";
 
     public static final String USAGE = 
         "Arguments:\n\n" +
@@ -43,7 +44,7 @@ public static void main(String[] args) throws Exception {
                 return;
             }
             String dirString = getArg("--src", argList);
-            dir = new File(dirString != null ? dirString : "../src/main/java");
+            dir = new File(dirString != null ? dirString : DEFAULT_SOURCE_PATH);
             String urlString = getArg("--url", argList);
             url = new URL(urlString != null ? urlString : METADATA_URL);
             whitelist = getRestriction(getArg("--whitelist", argList));

pom.xml

@@ -141,7 +141,8 @@
       <!-- Generate services -->
       <plugin>
         <artifactId>maven-invoker-plugin</artifactId>
-        <version>3.0.1</version>
+        <!-- https://issues.apache.org/jira/browse/MINVOKER-224 prevents an upgrade to 3.0.1 -->
+        <version>2.0.0</version>
         <executions>
           <execution>
             <id>generate-services</id>