Upgrade Spring Boot from 1.5.x to 2.1.6

Changes required to upgrade Babel to latest Spring Boot version.

This changelist is dependent on https://gerrit.onap.org/r/c/aai/oom/+/92293

Issue-ID: AAI-2540
Change-Id: I804b80506514d274249fa4eae36392793cb737fb
Signed-off-by: Lee, Tian (tl5884) <TianL@amdocs.com>
diff --git a/pom.xml b/pom.xml
index 65a963d..2c762b2 100644
--- a/pom.xml
+++ b/pom.xml
@@ -21,7 +21,8 @@
     ============LICENSE_END=========================================================
 
 -->
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+<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>
 
@@ -42,7 +43,7 @@
 
 	<properties>
 		<!-- Spring boot version -->
-		<spring.boot.version>1.5.19.RELEASE</spring.boot.version>
+		<spring.boot.version>2.1.6.RELEASE</spring.boot.version>
 
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
@@ -88,11 +89,11 @@
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-jersey</artifactId>
-		        <exclusions>
-			  <exclusion>
-			    <groupId>org.springframework.boot</groupId>
-			    <artifactId>spring-boot-starter-tomcat</artifactId>
-			  </exclusion>
+			<exclusions>
+				<exclusion>
+					<groupId>org.springframework.boot</groupId>
+					<artifactId>spring-boot-starter-tomcat</artifactId>
+				</exclusion>
 			</exclusions>
 		</dependency>
 		<dependency>
@@ -122,7 +123,6 @@
 		<dependency>
 			<groupId>org.apache.commons</groupId>
 			<artifactId>commons-lang3</artifactId>
-			<version>${apache.lang3.version}</version>
 		</dependency>
 		<dependency>
 			<groupId>javax.ws.rs</groupId>
@@ -131,7 +131,7 @@
 		</dependency>
 		<dependency>
 			<groupId>org.codehaus.groovy</groupId>
-			<artifactId>groovy-all</artifactId>
+			<artifactId>groovy</artifactId>
 		</dependency>
 		<dependency>
 			<groupId>org.onap.sdc.sdc-tosca</groupId>
@@ -175,7 +175,7 @@
 					<jvmArguments>
 						-DCONFIG_HOME=./appconfig-local
 						-DAPP_HOME=.
-                                                -Dtosca.mappings.config=./appconfig-local/tosca-mappings.json
+						-Dtosca.mappings.config=./appconfig-local/tosca-mappings.json
 						-DKEY_STORE_PASSWORD=${KEY_STORE_PASSWORD}
 					</jvmArguments>
 				</configuration>
diff --git a/src/main/java/org/onap/aai/auth/AAIMicroServiceAuthCore.java b/src/main/java/org/onap/aai/auth/AAIMicroServiceAuthCore.java
index eae1a24..f1b3549 100644
--- a/src/main/java/org/onap/aai/auth/AAIMicroServiceAuthCore.java
+++ b/src/main/java/org/onap/aai/auth/AAIMicroServiceAuthCore.java
@@ -165,7 +165,7 @@
             }
         } catch (FileNotFoundException e) {
             throw new AAIAuthException("Auth policy file could not be found", e);
-        } catch (JsonProcessingException e) {
+        } catch (JsonProcessingException | NullPointerException e) {
             throw new AAIAuthException("Error processing Auth policy file ", e);
         } catch (IOException e) {
             throw new AAIAuthException("Error reading Auth policy file", e);
diff --git a/src/main/java/org/onap/aai/babel/BabelApplication.java b/src/main/java/org/onap/aai/babel/BabelApplication.java
index e524e6e..b3eaee4 100644
--- a/src/main/java/org/onap/aai/babel/BabelApplication.java
+++ b/src/main/java/org/onap/aai/babel/BabelApplication.java
@@ -26,7 +26,7 @@
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.boot.builder.SpringApplicationBuilder;
-import org.springframework.boot.web.support.SpringBootServletInitializer;
+import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;
 import org.springframework.context.ConfigurableApplicationContext;
 import org.springframework.context.annotation.ImportResource;
 
diff --git a/src/main/resources/application.properties b/src/main/resources/application.properties
index 187826a..9a7d699 100644
--- a/src/main/resources/application.properties
+++ b/src/main/resources/application.properties
@@ -2,7 +2,7 @@
 server.ssl.key-store=${CONFIG_HOME}/auth/tomcat_keystore
 server.ssl.client-auth=need
 
-server.contextPath=/services/babel-service
+server.servlet.context-path=/services/babel-service
 
 logging.config=${CONFIG_HOME}/logback.xml