Adding settings.base.xml

I got the following error when I push my code.

~~~
[ERROR] Error executing Maven.
[ERROR] The specified global settings file does not exist: /var/lib/openshift/53763860302ca02b0d000001/wildfly/standalone/configuration/settings.base.xml
~~~

If `$OPENSHIFT_GEAR_DNS` is not set `rhcloud.com` domain, `mvn` is executed with settings.base.xml.

~~~ sh:bin/control
function build() {
  CONFIG_DIR="${OPENSHIFT_WILDFLY_DIR}/standalone/configuration"
  OPENSHIFT_MAVEN_MIRROR="${CONFIG_DIR}/settings.base.xml"
  if [[ $OPENSHIFT_GEAR_DNS =~ .*\.rhcloud\.com$ ]]
  then
      OPENSHIFT_MAVEN_MIRROR="${CONFIG_DIR}/settings.rhcloud.xml"
  fi
[...]
          if [ -n "$OPENSHIFT_MAVEN_MIRROR" ]
          then
              mvn --global-settings $OPENSHIFT_MAVEN_MIRROR --version
              mvn --global-settings $OPENSHIFT_MAVEN_MIRROR $MAVEN_ARGS
[...]
~~~