Add aenum module

aenum is a pure-python python3 enum compatible implementation.

Add Darwin HFS provisioning and fixes for the loop driver

Strip trailing whitespaces from nodemgr

Merge branch 'master' of git+ssh://www.opensvc.com/home/opensvc/opensvc

Fix proxy methods initialization

Wrong variable name was used to initialize. Also initializing to
[] is saner than initializing to None.

DataCore scalability issue workaround

The DataCore ssh access is not scalable. Limit the
pollers population by disabling the datacore resource
status evaluation on passive service nodes.

Don't stack on unicodes in table formatter

The lib formatting collector data as ascii tables stacked on
non-translatable unicodes, as it uses str-only methods like 'ljust'.

Silently ignore translation errors.

Treat correctly disabled heartbeat resource

- cancel stonith action
- cancel resource monitoring
- authorize service actions without --cluster

Move com.opensvc compliance modules to objects are wrappers

The features of these modules are thus available to module
developpers. Even shell-scripts modules can thus use complex
json-serialized variables using com.opensvc object wrappers.

Example: Module using files+packages facilities

PATH_SCRIPT="$(cd $(/usr/bin/dirname $(type -p -- $0 || echo $0));pwd)"
PATH_LIB=$PATH_SCRIPT/com.opensvc
PREFIX=OSVC_COMP_FOO

typeset -i r=0

case $1 in
check)
	$PATH_LIB/files ${PREFIX}_FILES check
        [ $? -eq 1 ] && r=1
	$PATH_LIB/packages ${PREFIX}_PKG check
        [ $? -eq 1 ] && r=1
        exit $r
        ;;
fix)
	$PATH_LIB/files ${PREFIX}_FILES check
        [ $? -eq 1 ] && exit 1
	$PATH_LIB/packages ${PREFIX}_PKG check
        [ $? -eq 1 ] && exit 1
        ;;
fixable)
	exit 2
	;;
esac

Missing resource detail in 'print_status'

'print_status' did not print resource detail in groups with only
one resource. The heartbeart group for example usually has only
one resource.