Setting tag NodeManager-2.0-1

first working version of 5.0:
pld.c/, db-config.d/ and nodeconfig/ scripts should now sit in the module they belong to
nodefamily is 3-fold with pldistro-fcdistro-arch
relies on GetSlivers to expose 'GetSliceFamily' for slivers
(in addition to the 'vref' tag that's still exposed too)
logging reviewed for more convenience
support for 'service nm restartdebug'
make sync knows how to publish uncommitted code on a test node