Use java 11 & make Jenkins 2.361.1 the minimum version (#172)

Use java 11 & make Jenkins 2.361.1 the minimum version

Jenkinsfile

@@ -1,3 +1,6 @@
-buildPlugin(
-  jenkinsVersions: [null, '2.332.4']
-) 
+buildPlugin(configurations: [
+  [ platform: "linux", jdk: "11", jenkins: null ],
+  [ platform: "windows", jdk: "11", jenkins: null ],
+  [ platform: "linux", jdk: "11", jenkins: "2.361.1" ],
+  [ platform: "windows", jdk: "11", jenkins: "2.361.1" ]
+]) 

pom.xml

@@ -33,7 +33,7 @@
 
   <properties>
     <changelist>999999-SNAPSHOT</changelist>
-    <jenkins.version>2.332.4</jenkins.version>
+    <jenkins.version>2.361.1</jenkins.version>
     <java.level>8</java.level>
     <checkstyle.version>3.2.0</checkstyle.version>
   </properties>
@@ -42,7 +42,7 @@
     <dependencies>
       <dependency>
         <groupId>io.jenkins.tools.bom</groupId>
-        <artifactId>bom-2.332.x</artifactId>
+        <artifactId>bom-2.361.x</artifactId>
         <version>1607.va_c1576527071</version>
         <scope>import</scope>
         <type>pom</type>