NIFI-6262 - Upgrade to nifi-nar-maven-plugin 1.3.1

This closes #3463.

README.md

@@ -59,7 +59,7 @@ Apache NiFi was made for dataflow. It supports highly configurable directed grap
 
 ## Requirements
 * JDK 1.8 (*ongoing work to enable NiFi to run on Java 9/10/11; see [NIFI-5174](https://issues.apache.org/jira/browse/NIFI-5174)*)
-* Apache Maven 3.1.0 or newer
+* Apache Maven 3.1.1 or newer
 * Git Client (used during build process by 'bower' plugin)
 
 ## Getting Started

nifi-nar-bundles/nifi-jetty-bundle/pom.xml

@@ -34,6 +34,10 @@
             <groupId>org.apache.nifi</groupId>
             <artifactId>nifi-api</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.apache.nifi</groupId>
+            <artifactId>nifi-framework-api</artifactId>
+        </dependency>
         <dependency>
             <groupId>org.eclipse.jetty</groupId>
             <artifactId>jetty-server</artifactId>

pom.xml

@@ -87,7 +87,7 @@
     <properties>
         <maven.compiler.source>1.8</maven.compiler.source>
         <maven.compiler.target>1.8</maven.compiler.target>
-        <maven.min-version>3.1.0</maven.min-version>
+        <maven.min-version>3.1.1</maven.min-version>
         <maven.surefire.arguments />
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
@@ -488,8 +488,11 @@
             <plugin>
                 <groupId>org.apache.nifi</groupId>
                 <artifactId>nifi-nar-maven-plugin</artifactId>
-                <version>1.2.0</version>
+                <version>1.3.1</version>
                 <extensions>true</extensions>
+                <configuration>
+                    <enforceDocGeneration>true</enforceDocGeneration>
+                </configuration>
             </plugin>
             <plugin>
                 <groupId>org.sonatype.plugins</groupId>