Fix/activate existing volume

[arcenik]

• Activate volume group automaticaly
• Use json format for pvs/vgs/lvs report format (in facter)
• Removes $manage_pkg parameter and install lvm2 package if not already defined

[arcenik]

wip: In sme cases facter generate errors

Error: Facter: error while resolving custom fact "logical_volumes": undefined method `delete' for nil:NilClass
Error: Facter: error while resolving custom fact "physical_volumes": undefined method `delete' for nil:NilClass
Error: Facter: error while resolving custom fact "volume_groups": undefined method `delete' for nil:NilClass

[hvhaugwitz]

What is the state of this pull request?

[CLAassistant]

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