Clean up minor checkstyle/sonar issues

A few minor eclipse warnings and checkstyle warnings in policy models.

Issue-ID: POLICY-1910
Change-Id: I612c6514fa7d88cb8658a7ee1618869a525e48d7
Signed-off-by: liamfallon <liam.fallon@est.tech>
diff --git a/models-interactions/model-yaml/pom.xml b/models-interactions/model-yaml/pom.xml
index 7bd1fa4..2273abf 100644
--- a/models-interactions/model-yaml/pom.xml
+++ b/models-interactions/model-yaml/pom.xml
@@ -3,7 +3,7 @@
   ONAP
   ================================================================================
   Copyright (C) 2017-2020 AT&T Intellectual Property. All rights reserved.
-  Modifications Copyright (C) 2019 Nordix Foundation.
+  Modifications Copyright (C) 2019-2020 Nordix Foundation.
   ================================================================================
   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
@@ -19,66 +19,75 @@
   ============LICENSE_END=========================================================
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-  <modelVersion>4.0.0</modelVersion>
+<project
+    xmlns="http://maven.apache.org/POM/4.0.0"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
 
-  <parent>
-    <groupId>org.onap.policy.models</groupId>
-    <artifactId>policy-models-interactions</artifactId>
-    <version>2.2.1-SNAPSHOT</version>
-  </parent>
+    <parent>
+        <groupId>org.onap.policy.models</groupId>
+        <artifactId>policy-models-interactions</artifactId>
+        <version>2.2.1-SNAPSHOT</version>
+    </parent>
 
-  <groupId>org.onap.policy.models.policy-models-interactions</groupId>
-  <artifactId>model-yaml</artifactId>
-  
-  <dependencies>
-    <dependency>
-      <groupId>org.slf4j</groupId>
-      <artifactId>slf4j-api</artifactId>
-      <scope>provided</scope>
-    </dependency>
-    <dependency>
-      <groupId>ch.qos.logback</groupId>
-      <artifactId>logback-classic</artifactId>
-      <scope>provided</scope>
-    </dependency>
-    <dependency>
-      <groupId>org.yaml</groupId>
-      <artifactId>snakeyaml</artifactId>
-    </dependency>
-    <dependency>
-      <groupId>org.jgrapht</groupId>
-      <artifactId>jgrapht-core</artifactId>
-      <version>0.9.2</version>
-    </dependency>
-    <dependency>
-      <groupId>org.onap.policy.models.policy-models-interactions.model-impl</groupId>
-      <artifactId>sdc</artifactId>
-      <version>${project.version}</version>
-      <scope>provided</scope>
-    </dependency>
-    <dependency>
-      <groupId>org.onap.policy.models.policy-models-interactions.model-impl</groupId>
-      <artifactId>aai</artifactId>
-      <version>${project.version}</version>
-      <scope>provided</scope>
-    </dependency>
-    <dependency>
-      <groupId>com.google.guava</groupId>
-      <artifactId>guava</artifactId>
-    </dependency>
-    <dependency>
-      <groupId>junit</groupId>
-      <artifactId>junit</artifactId>
-      <scope>test</scope>
-    </dependency>
-    <dependency>
-      <groupId>org.onap.policy.common</groupId>
-      <artifactId>utils-test</artifactId>
-      <version>${policy.common.version}</version>
-      <scope>test</scope>
-    </dependency>
-  </dependencies>
+    <groupId>org.onap.policy.models.policy-models-interactions</groupId>
+    <artifactId>model-yaml</artifactId>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-api</artifactId>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>ch.qos.logback</groupId>
+            <artifactId>logback-classic</artifactId>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.yaml</groupId>
+            <artifactId>snakeyaml</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.jgrapht</groupId>
+            <artifactId>jgrapht-core</artifactId>
+            <version>0.9.2</version>
+        </dependency>
+        <dependency>
+            <groupId>org.onap.policy.models.policy-models-interactions.model-impl</groupId>
+            <artifactId>sdc</artifactId>
+            <version>${project.version}</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.onap.policy.models.policy-models-interactions.model-impl</groupId>
+            <artifactId>aai</artifactId>
+            <version>${project.version}</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.google.guava</groupId>
+            <artifactId>guava</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.onap.policy.common</groupId>
+            <artifactId>utils-test</artifactId>
+            <version>${policy.common.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.assertj</groupId>
+            <artifactId>assertj-core</artifactId>
+            <scope>test</scope>
+        </dependency>
+
+    </dependencies>
 
     <!--
     Without this defined here, the checkstyle plugin just simply fails outright. This needs to be investigated