Use property for maven-surefure-pugin

Closes gh-62

Author: jardelnovaes

booking-faces/pom.xml

@@ -164,7 +164,7 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-surefire-plugin</artifactId>
-                <version>2.20.1</version>
+				<version>${maven-surefire-plugin.version}</version>
 				<configuration>
 					<junitArtifactName>junit:junit</junitArtifactName>
 					<includes>

booking-mvc/pom.xml

@@ -203,7 +203,7 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-surefire-plugin</artifactId>
-				<version>2.22.2</version>
+				<version>${maven-surefire-plugin.version}</version>
 				<configuration>
 					<junitArtifactName>junit:junit</junitArtifactName>
 					<includes>

pom.xml

@@ -33,6 +33,7 @@
 		<primefaces.version>8.0</primefaces.version>
 		<servlet.version>5.0.0</servlet.version>
 		<webflow.version>3.0.0-SNAPSHOT</webflow.version>
+		<maven-surefire-plugin.version>2.22.2</maven-surefire-plugin.version>
 	</properties>
 
 	<dependencyManagement>