Add support for Config File Provider to Maven Project module

This patch adds some detection logic to the code to detect if the
settings file starts with:
    org.jenkinsci.plugins.configfiles.maven.MavenSettingsConfig
or in the case of global-settings starts with:
    org.jenkinsci.plugins.configfiles.maven.GlobalMavenSettingsConfig

If true, the module will configure for Config File Provider as the
settings files.

See:
https://wiki.jenkins-ci.org/display/JENKINS/Config+File+Provider+Plugin