Revert "use submodules instead of subprojects"

This reverts commit d071fc9.

Author: rbradley813

java-parent/pom.xml

@@ -3,11 +3,7 @@
          xmlns="http://maven.apache.org/POM/4.1.0"
          xsi:schemaLocation="http://maven.apache.org/POM/4.1.0 https://maven.apache.org/xsd/maven-4.1.0.xsd">
     <modelVersion>4.1.0</modelVersion>
-    <parent>
-        <groupId>dev.ikm.build</groupId>
-        <artifactId>parent</artifactId>
-    </parent>
-
+    <parent/>
     <artifactId>java-parent</artifactId>
     <name>Java Parent</name>
     <description>

pom.xml

@@ -108,9 +108,9 @@
         <sonar.host.url>https://sonarcloud.io</sonar.host.url>
     </properties>
 
-    <modules>
-        <module>java-parent</module>
-    </modules>
+    <subprojects>
+        <subproject>java-parent</subproject>
+    </subprojects>
 
     <build>
         <pluginManagement>