Fix DMN tests compile errors on 7.3.0 branch

Author: filiphr

modules/flowable-dmn-engine/src/test/java/org/flowable/dmn/engine/test/runtime/HitPolicyCollectTest.java

@@ -54,7 +54,7 @@ public void collectHitPolicyNoAggregator() {
     @Test
     @DmnDeployment(resources = "org/flowable/dmn/engine/test/runtime/HitPolicyCollectTest.collectHitPolicyNoAggregator.dmn")
     public void collectHitPolicyNoAggregatorNoMatch() {
-        DmnDecisionService dmnRuleService = dmnEngine.getDmnDecisionService();
+        DmnDecisionService dmnRuleService = flowableDmnRule.getDmnEngine().getDmnDecisionService();
 
         List<Map<String, Object>> result = dmnRuleService.createExecuteDecisionBuilder()
                 .decisionKey("decision1")
@@ -141,7 +141,7 @@ public void collectHitPolicySUM() {
     @Test
     @DmnDeployment(resources = "org/flowable/dmn/engine/test/runtime/HitPolicyCollectTest.collectHitPolicySUM.dmn")
     public void collectHitPolicySUMNoMatch() {
-        DmnDecisionService dmnRuleService = dmnEngine.getDmnDecisionService();
+        DmnDecisionService dmnRuleService = flowableDmnRule.getDmnEngine().getDmnDecisionService();
 
         Map<String, Object> result = dmnRuleService.createExecuteDecisionBuilder()
                 .decisionKey("decision1")

modules/flowable-dmn-engine/src/test/java/org/flowable/dmn/engine/test/runtime/HitPolicyFirstTest.java

@@ -54,7 +54,7 @@ public void firstHitPolicy() {
     @Test
     @DmnDeployment
     public void firstHitPolicyNoMatch() {
-        DmnDecisionService dmnRuleService = dmnEngine.getDmnDecisionService();
+        DmnDecisionService dmnRuleService = flowableDmnRule.getDmnEngine().getDmnDecisionService();
 
         Map<String, Object> result = dmnRuleService.createExecuteDecisionBuilder()
                 .decisionKey("decision1")

modules/flowable-dmn-engine/src/test/java/org/flowable/dmn/engine/test/runtime/HitPolicyOutputOrderTest.java

@@ -54,7 +54,7 @@ public void outputOrderHitPolicy() {
     @Test
     @DmnDeployment(resources = "org/flowable/dmn/engine/test/runtime/HitPolicyOutputOrderTest.outputOrderHitPolicy.dmn")
     public void outputOrderHitPolicyNoMatch() {
-        DmnDecisionService dmnRuleService = dmnEngine.getDmnDecisionService();
+        DmnDecisionService dmnRuleService = flowableDmnRule.getDmnEngine().getDmnDecisionService();
 
         List<Map<String, Object>> result = dmnRuleService.createExecuteDecisionBuilder()
                 .decisionKey("decision1")

modules/flowable-dmn-engine/src/test/java/org/flowable/dmn/engine/test/runtime/HitPolicyPriorityTest.java

@@ -52,7 +52,7 @@ public void priorityHitPolicy() {
     @Test
     @DmnDeployment(resources = "org/flowable/dmn/engine/test/runtime/HitPolicyPriorityTest.priorityHitPolicy.dmn")
     public void priorityHitPolicyNoMatch() {
-        DmnDecisionService dmnRuleService = dmnEngine.getDmnDecisionService();
+        DmnDecisionService dmnRuleService = flowableDmnRule.getDmnEngine().getDmnDecisionService();
 
         Map<String, Object> result = dmnRuleService.createExecuteDecisionBuilder()
                 .decisionKey("decision1")