Fixed problem with indentation in multi-line content

[tkrzeminski]

Fixed problem with indentation in multi-line content when used in additionalClasspath variable. It happens when value contains tabs or spaces. This results in error:

...
Processing DSL script job.groovy
ERROR: startup failed:
workspace:/jobs/job.groovy: n: unable to resolve class ...

Sample XML file:

<project>
    ...
    <builders>
       <javaposse.jobdsl.plugin.ExecuteDslScripts plugin="job-dsl@1.50">
            <targets>jobs/job.groovy</targets>
            <usingScriptText>false</usingScriptText>
            <ignoreExisting>false</ignoreExisting>
            <ignoreMissingFiles>false</ignoreMissingFiles>
            <removedJobAction>DELETE</removedJobAction>
            <removedViewAction>DELETE</removedViewAction>
            <lookupStrategy>JENKINS_ROOT</lookupStrategy>
            <additionalClasspath>src/main/resources
              src/main/groovy
              lib/*.jar</additionalClasspath>
        </javaposse.jobdsl.plugin.ExecuteDslScripts>
    ...
    </builders>
</project>

Job can be created with CLI command:

java -jar ./.cli/jenkins-cli.jar -s http://localhost:8080/ create-job job < job.xml