vmware_dc_cluster_host_vm_info metric

[dannyk81]

This (partially) fixes #28

This metric provides labels of the datacenters, clusters, hosts and vms

For example:

vmware_dc_cluster_host_vm_info{cluster_name="PROD",dc_name="SITE-A",host_name="esx-prod-1.foo.bar",vm_name="foo-vm-1"} 1.0

This metric can be combined to filter subset of the other metrics based on the above labels.

[rverchere]

@dannyk81 , can you check with @pryorda to resolve conflicts, as he add a lot of enhancements?

[dannyk81]

Sure 👍

[pryorda]

@dannyk81 can you move this over to my repo? Also, Can you fix the merge conflicts?