Modernize plugin and build againts modern Jenkins (#18)

pom.xml

@@ -29,7 +29,7 @@
   <parent>
     <groupId>org.jenkins-ci.plugins</groupId>
     <artifactId>plugin</artifactId>
-    <version>3.43</version>
+    <version>4.47</version>
     <relativePath />
   </parent>
 
@@ -58,17 +58,16 @@
   </developers>
 
   <scm>
-    <connection>scm:git:git://github.com/jenkinsci/${project.artifactId}-plugin.git</connection>
-    <developerConnection>scm:git:[email protected]:jenkinsci/${project.artifactId}-plugin.git</developerConnection>
-    <url>http://github.com/jenkinsci/${project.artifactId}-plugin</url>
+    <connection>scm:git:git://github.com/${gitHubRepo}.git</connection>
+    <developerConnection>scm:git:[email protected]:${gitHubRepo}.git</developerConnection>
+    <url>https://github.com/${gitHubRepo}</url>
     <tag>${scmTag}</tag>
   </scm>
 
   <properties>
     <changelist>999999-SNAPSHOT</changelist>
-    <java.level>8</java.level>
-    <jenkins.version>2.138</jenkins.version>
-    <scm-api.version>2.4.1</scm-api.version>
+    <gitHubRepo>jenkinsci/basic-branch-build-strategies-plugin</gitHubRepo>
+    <jenkins.version>2.346.3</jenkins.version>
   </properties>
 
   <repositories>
@@ -77,40 +76,44 @@
       <url>https://repo.jenkins-ci.org/public/</url>
     </repository>
   </repositories>
-
   <pluginRepositories>
     <pluginRepository>
       <id>repo.jenkins-ci.org</id>
       <url>https://repo.jenkins-ci.org/public/</url>
     </pluginRepository>
   </pluginRepositories>
-
+  <dependencyManagement>
+    <dependencies>
+      <dependency>
+        <groupId>io.jenkins.tools.bom</groupId>
+        <artifactId>bom-2.346.x</artifactId>
+        <version>1643.v1cffef51df73</version>
+        <scope>import</scope>
+        <type>pom</type>
+      </dependency>
+    </dependencies>
+  </dependencyManagement>
   <dependencies>
     <!-- plugin dependencies -->
     <dependency>
       <groupId>org.jenkins-ci.plugins</groupId>
       <artifactId>scm-api</artifactId>
-      <version>${scm-api.version}</version>
     </dependency>
     <dependency>
       <groupId>org.jenkins-ci.plugins</groupId>
       <artifactId>branch-api</artifactId>
-      <version>2.5.1</version>
     </dependency>
     <dependency>
       <groupId>org.jenkins-ci.plugins</groupId>
       <artifactId>structs</artifactId>
-      <version>1.10</version>
     </dependency>
     <!-- jenkins dependencies -->
     <!-- test dependencies -->
     <dependency>
       <groupId>org.jenkins-ci.plugins</groupId>
       <artifactId>scm-api</artifactId>
-      <version>${scm-api.version}</version>
       <classifier>tests</classifier>
       <scope>test</scope>
     </dependency>
   </dependencies>
-
 </project>

src/main/resources/index.jelly

@@ -0,0 +1,4 @@
+<?jelly escape-by-default='true'?>
+<div>
+    This plugin provides some basic branch build strategies for use with Branch API based projects.
+</div>