Merge branch 'corrective-policy' into 'corrective-policy'

Fix payload parsing issue

See merge request entgra/carbon-device-mgt!655

components/policy-mgt/org.wso2.carbon.policy.mgt.core/src/main/java/org/wso2/carbon/policy/mgt/core/util/PolicyManagementConstants.java

@@ -69,7 +69,7 @@ public final class PolicyManagementConstants {
     public static final String POLICY_ACTIONS = "POLICY_ACTIONS";
     public static final String CORRECTIVE_POLICY_FEATURE_CODE = "CORRECTIVE_POLICY";
     public static final String GEOFENCE_POLICY = "GEOFENCE_POLICY";
-    public static final String EMAIL_CORRECTIVE_ACTION_TYPE = "EMAIL";
+    public static final String EMAIL_CORRECTIVE_ACTION_TYPE = "MAIL";
     public static final String EMAIL_FEATURE_CODE = "EMAIL_ACTION";
     public static final Integer EMAIL_ACTION_ID = 450;