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)

rule-engines/easy-rules/pom.xml

@@ -1,11 +1,9 @@
 <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.easyrules</groupId>
     <artifactId>easy-rules</artifactId>
     <version>1.0</version>
-
     <name>easy-rules</name>
 
     <parent>
@@ -18,7 +16,11 @@
         <dependency>
             <groupId>org.jeasy</groupId>
             <artifactId>easy-rules-core</artifactId>
-            <version>3.0.0</version>
+            <version>${easy-rules.version}</version>
         </dependency>
     </dependencies>
+
+    <properties>
+        <easy-rules.version>3.0.0</easy-rules.version>
+    </properties>
 </project>

rule-engines/openl-tablets/pom.xml

@@ -1,11 +1,9 @@
 <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.openltablets</groupId>
     <artifactId>openl-tablets</artifactId>
     <version>1.0</version>
-
     <name>openl-tablets</name>
 
     <parent>
@@ -18,12 +16,17 @@
         <dependency>
             <groupId>org.openl</groupId>
             <artifactId>org.openl.core</artifactId>
-            <version>5.19.4</version>
+            <version>${openl.version}</version>
         </dependency>
         <dependency>
             <groupId>org.openl.rules</groupId>
             <artifactId>org.openl.rules</artifactId>
-            <version>5.19.4</version>
+            <version>${openl.version}</version>
         </dependency>
     </dependencies>
+
+    <properties>
+        <openl.version>5.19.4</openl.version>
+    </properties>
+
 </project>

rule-engines/rulebook/pom.xml

@@ -1,11 +1,9 @@
 <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.rulebook</groupId>
     <artifactId>rulebook</artifactId>
     <version>1.0</version>
-
     <name>rulebook</name>
 
     <parent>
@@ -18,7 +16,12 @@
         <dependency>
             <groupId>com.deliveredtechnologies</groupId>
             <artifactId>rulebook-core</artifactId>
-            <version>0.6.2</version>
+            <version>${rulebook.version}</version>
         </dependency>
     </dependencies>
+
+    <properties>
+        <rulebook.version>0.6.2</rulebook.version>
+    </properties>
+
 </project>