Скомпилируйте и установите этот плагин: https://github.com/tjmcmanus/NetbeansLibertyPlugin.git
Вместо этого используйте этот файл pom.xml:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.netbeans.modules.liberty</groupId>
<artifactId>NetBeansLibertyPlugin</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>nbm</packaging>
<build>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>nbm-maven-plugin</artifactId>
<version>3.13</version>
<extensions>true</extensions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.5.1</version>
<configuration>
<source>1.6</source>
<target>1.6</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<version>2.4</version>
<configuration>
<useDefaultManifestFile>true</useDefaultManifestFile>
</configuration>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>netbeans</id>
<name>Repository hosting NetBeans modules</name>
<url>http://bits.netbeans.org/nexus/content/groups/netbeans</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
</repositories>
<dependencies>
<dependency>
<groupId>org.netbeans.api</groupId>
<artifactId>org-netbeans-modules-server</artifactId>
<version>${netbeans.version}</version>
<type>jar</type>
</dependency>
<dependency>
<groupId>org.netbeans.api</groupId>
<artifactId>org-openide-nodes</artifactId>
<version>${netbeans.version}</version>
</dependency>
<dependency>
<groupId>org.netbeans.api</groupId>
<artifactId>org-openide-dialogs</artifactId>
<version>${netbeans.version}</version>
</dependency>
<dependency>
<groupId>org.netbeans.api</groupId>
<artifactId>org-openide-util</artifactId>
<version>${netbeans.version}</version>
</dependency>
<dependency>
<groupId>org.netbeans.api</groupId>
<artifactId>org-openide-util-ui</artifactId>
<version>${netbeans.version}</version>
</dependency>
<dependency>
<groupId>org.netbeans.api</groupId>
<artifactId>org-openide-awt</artifactId>
<version>${netbeans.version}</version>
</dependency>
<dependency>
<groupId>org.netbeans.api</groupId>
<artifactId>org-openide-filesystems</artifactId>
<version>${netbeans.version}</version>
</dependency>
<dependency>
<groupId>org.netbeans.api</groupId>
<artifactId>org-openide-io</artifactId>
<version>${netbeans.version}</version>
</dependency>
<dependency>
<groupId>org.netbeans.api</groupId>
<artifactId>org-netbeans-modules-keyring</artifactId>
<version>${netbeans.version}</version>
<type>jar</type>
</dependency>
<dependency>
<groupId>org.netbeans.api</groupId>
<artifactId>org-openide-filesystems-nb</artifactId>
<version>${netbeans.version}</version>
<type>jar</type>
</dependency>
<dependency>
<groupId>org.netbeans.api</groupId>
<artifactId>org-netbeans-api-templates</artifactId>
<version>${netbeans.version}</version>
</dependency>
<dependency>
<groupId>org.netbeans.api</groupId>
<artifactId>org-openide-util-lookup</artifactId>
<version>${netbeans.version}</version>
</dependency>
<dependency>
<groupId>org.netbeans.api</groupId>
<artifactId>org-openide-actions</artifactId>
<version>${netbeans.version}</version>
<type>jar</type>
</dependency>
<dependency>
<groupId>org.netbeans.api</groupId>
<artifactId>org-netbeans-modules-j2eeserver</artifactId>
<version>${netbeans.version}</version>
<type>jar</type>
</dependency>
<dependency>
<groupId>org.netbeans.api</groupId>
<artifactId>org-netbeans-modules-project-libraries</artifactId>
<version>${netbeans.version}</version>
</dependency>
<dependency>
<groupId>org.netbeans.api</groupId>
<artifactId>org-netbeans-modules-java-platform</artifactId>
<version>${netbeans.version}</version>
</dependency>
<dependency>
<groupId>org.netbeans.api</groupId>
<artifactId>org-netbeans-modules-j2eeapis</artifactId>
<version>${netbeans.version}</version>
</dependency>
<!--fix transitive dependency by Ricardo Guillen-->
<dependency>
<groupId>org.netbeans.api</groupId>
<artifactId>org-netbeans-modules-j2ee-core</artifactId>
<version>${netbeans.version}</version>
</dependency>
<dependency>
<groupId>org.netbeans.api</groupId>
<artifactId>org-netbeans-api-annotations-common</artifactId>
<version>${netbeans.version}</version>
</dependency>
</dependencies>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<!--update version by Ricardo Guillen-->
<netbeans.version>RELEASE82</netbeans.version>
</properties>
<name>NetBeansLibertyPlugin</name>
</project>