Adds missing "MANUAL" job status (#135)

Author: newcron

src/main/java/org/gitlab4j/api/models/JobStatus.java

@@ -33,7 +33,7 @@
  */
 public enum JobStatus {
 
-    RUNNING, PENDING, SUCCESS, FAILED, CANCELED, SKIPPED;
+    RUNNING, PENDING, SUCCESS, FAILED, CANCELED, SKIPPED, MANUAL;
 
     private static JacksonJsonEnumHelper<JobStatus> enumHelper = new JacksonJsonEnumHelper<>(JobStatus.class);
 
@@ -51,4 +51,4 @@ public String toValue() {
     public String toString() {
         return (enumHelper.toString(this));
     }
-}
+}