Merge lp://qastaging/~barryprice/charm-haproxy/charm-helpers-sync into lp://qastaging/charm-haproxy

.bzrignore (+1/-0)
Makefile (+1/-1)
hooks/charmhelpers/__init__.py (+65/-4)
hooks/charmhelpers/contrib/charmsupport/nrpe.py (+32/-9)
hooks/charmhelpers/core/hookenv.py (+450/-28)
hooks/charmhelpers/core/host.py (+168/-11)
hooks/charmhelpers/core/host_factory/centos.py (+16/-0)
hooks/charmhelpers/core/host_factory/ubuntu.py (+57/-0)
hooks/charmhelpers/core/kernel.py (+2/-2)
hooks/charmhelpers/core/services/base.py (+18/-7)
hooks/charmhelpers/core/strutils.py (+64/-5)
hooks/charmhelpers/core/sysctl.py (+21/-10)
hooks/charmhelpers/core/templating.py (+18/-9)
hooks/charmhelpers/core/unitdata.py (+8/-1)
hooks/charmhelpers/fetch/__init__.py (+19/-9)
hooks/charmhelpers/fetch/archiveurl.py (+1/-1)
hooks/charmhelpers/fetch/bzrurl.py (+2/-2)
hooks/charmhelpers/fetch/centos.py (+1/-1)
hooks/charmhelpers/fetch/giturl.py (+2/-2)
hooks/charmhelpers/fetch/python/__init__.py (+13/-0)
hooks/charmhelpers/fetch/python/debug.py (+54/-0)
hooks/charmhelpers/fetch/python/packages.py (+154/-0)
hooks/charmhelpers/fetch/python/rpdb.py (+56/-0)
hooks/charmhelpers/fetch/python/version.py (+32/-0)
hooks/charmhelpers/fetch/snap.py (+33/-5)
hooks/charmhelpers/fetch/ubuntu.py (+426/-62)
hooks/hooks.py (+8/-5)
hooks/tests/test_config_changed_hooks.py (+5/-5)
hooks/tests/test_helpers.py (+8/-8)