Merge pull request #27 from jouvin/xrootd

ncm-xrootd: ensure that local redirector is started first
[maven-release-plugin] prepare release configuration-modules-grid-14.6.0-rc3
[maven-release-plugin] prepare for next development iteration
[maven-release-plugin] prepare release configuration-modules-grid-14.6.0-rc4
[maven-release-plugin] prepare for next development iteration
[maven-release-plugin] prepare release configuration-modules-grid-14.6.0
[maven-release-plugin] prepare for next development iteration
ncm-xrootd: declare $XROOTD_SYSCONFIG_FILE as an exported variable (for testing)
ncm-xrootd: make Configure() testable
(involves adding a new methode configureNode() that allows to fake the host name)
ncm-xrootd: add a test for #28
ncm-xrootd: fix disk instance not added to the list of managed instances

Fixes #28
ncm-xrootd: do not restart CMSD instances if none present