ODP-1434 Fixing case sensitivity issue with jackson upgrade on registering yarn-service

Author: shubhluck

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-services/hadoop-yarn-services-core/src/main/java/org/apache/hadoop/yarn/service/api/records/PlacementScope.java

@@ -22,6 +22,7 @@
 import org.apache.hadoop.yarn.api.resource.PlacementConstraints;
 
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonCreator;
 
 import io.swagger.annotations.ApiModel;
 
@@ -45,6 +46,13 @@ public String getValue() {
     return value;
   }
 
+  @JsonCreator
+  public static PlacementScope fromString(String key) {
+    return key == null
+            ? null
+            : PlacementScope.valueOf(key.toUpperCase());
+  }
+
   @Override
   @JsonValue
   public String toString() {