package-plugin fails because pom.xml created by create-pom on plugin project has missing tomcat dependency

[xnickmx]

Summary:

• Grails 2.3.4
• Gails plugin project
• Use Maven
• run "package-plugin" and get a class not found error.

Steps to reproduce:
grails create-plugin myplugin
cd myplugin
grails create-pom com.mycompany
mvn grails:package-plugin

Error output: https://gist.github.com/xnickmx/28036e21b862cf0a3b3d

To fix, add the Tomcat dependency to the POM.

    <dependency>
        <groupId>org.grails.plugins</groupId>
        <artifactId>tomcat</artifactId>
        <version>7.0.47</version>
        <scope>provided</scope>
        <type>zip</type>
    </dependency>

By the way, this is the same dependency that IS added to Grails applications project POMs by "grails create-pom".

now mvn grails:package-plugin works.