Add jenkins.baseline variable to reduce manual bom update mistakes (#737)

Author: timja

empty-plugin/src/main/resources/archetype-resources/pom.xml

@@ -35,7 +35,8 @@
     <revision>1.0</revision>
     <changelist>-SNAPSHOT</changelist>
     <!-- https://www.jenkins.io/doc/developer/plugin-development/choosing-jenkins-baseline/ -->
-    <jenkins.version>2.440.3</jenkins.version>
+    <jenkins.baseline>2.440</jenkins.baseline>
+    <jenkins.version>${jenkins.baseline}.3</jenkins.version>
 #if( $hostOnJenkinsGitHub == "true" )
     <gitHubRepo>jenkinsci/${project.artifactId}-plugin</gitHubRepo>
 #end
@@ -47,7 +48,7 @@
     <dependencies>
       <dependency>
         <groupId>io.jenkins.tools.bom</groupId>
-        <artifactId>bom-2.440.x</artifactId>
+        <artifactId>bom-${jenkins.baseline}.x</artifactId>
         <version>3208.vb_21177d4b_cd9</version>
         <type>pom</type>
         <scope>import</scope>

global-configuration/src/main/resources/archetype-resources/pom.xml

@@ -35,7 +35,8 @@
     <revision>1.0</revision>
     <changelist>-SNAPSHOT</changelist>
     <!-- https://www.jenkins.io/doc/developer/plugin-development/choosing-jenkins-baseline/ -->
-    <jenkins.version>2.440.3</jenkins.version>
+    <jenkins.baseline>2.440</jenkins.baseline>
+    <jenkins.version>${jenkins.baseline}.3</jenkins.version>
 #if( $hostOnJenkinsGitHub == "true" )
     <gitHubRepo>jenkinsci/${project.artifactId}-plugin</gitHubRepo>
 #end
@@ -47,7 +48,7 @@
     <dependencies>
       <dependency>
         <groupId>io.jenkins.tools.bom</groupId>
-        <artifactId>bom-2.440.x</artifactId>
+        <artifactId>bom-${jenkins.baseline}.x</artifactId>
         <version>3208.vb_21177d4b_cd9</version>
         <type>pom</type>
         <scope>import</scope>

hello-world/src/main/resources/archetype-resources/pom.xml

@@ -36,7 +36,8 @@
     <changelist>-SNAPSHOT</changelist>
 
     <!-- https://www.jenkins.io/doc/developer/plugin-development/choosing-jenkins-baseline/ -->
-    <jenkins.version>2.440.3</jenkins.version>
+    <jenkins.baseline>2.440</jenkins.baseline>
+    <jenkins.version>${jenkins.baseline}.3</jenkins.version>
 #if( $hostOnJenkinsGitHub == "true" )
     <gitHubRepo>jenkinsci/${project.artifactId}-plugin</gitHubRepo>
 #end
@@ -49,7 +50,7 @@
       <dependency>
         <!-- Pick up common dependencies for the selected LTS line: https://github.com/jenkinsci/bom#usage -->
         <groupId>io.jenkins.tools.bom</groupId>
-        <artifactId>bom-2.440.x</artifactId>
+        <artifactId>bom-${jenkins.baseline}.x</artifactId>
         <version>3208.vb_21177d4b_cd9</version>
         <type>pom</type>
         <scope>import</scope>