BAEL-5246: pom cleanup (#4620)

* BAEL-5246: round 1 of pom cleanup - upto "jersey" project

* BAEL-5246: Initial pass for pom cleanup - upto spring-cloud

* BAEL-5246: pom cleanup upto testing-modules/junit5

* BAEL-5246: pom cleanup - upto xstream

* BAEL-5246: pom cleanup - last round (before review)

spring-mvc-java/pom.xml

@@ -1,5 +1,5 @@
 <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">
+    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>
     <groupId>com.baeldung</groupId>
     <artifactId>spring-mvc-java</artifactId>
@@ -127,12 +127,12 @@
         <dependency>
             <groupId>javax.el</groupId>
             <artifactId>javax.el-api</artifactId>
-            <version>2.2.4</version>
+            <version>${javax.el.version}</version>
         </dependency>
         <dependency>
             <groupId>org.glassfish.web</groupId>
             <artifactId>javax.el</artifactId>
-            <version>2.2.4</version>
+            <version>${javax.el.version}</version>
         </dependency>
 
         <!-- Web socket to user example -->
@@ -207,7 +207,7 @@
                                 <configuration>
                                     <excludes>
                                         <exclude>**/*IntegrationTest.java</exclude>
-                        				<exclude>**/*IntTest.java</exclude>
+                                        <exclude>**/*IntTest.java</exclude>
                                     </excludes>
                                     <includes>
                                         <include>**/*LiveTest.java</include>
@@ -251,7 +251,7 @@
     </profiles>
 
     <properties>
-		<thymeleaf.version>3.0.9.RELEASE</thymeleaf.version>
+        <thymeleaf.version>3.0.9.RELEASE</thymeleaf.version>
 
         <!-- persistence -->
         <hibernate.version>5.2.5.Final</hibernate.version>
@@ -282,6 +282,8 @@
 
         <!-- excel -->
         <poi.version>3.16-beta1</poi.version>
+
+        <javax.el.version>2.2.4</javax.el.version>
     </properties>
 
 </project>