Ability to remove vswitch without path parameter

[ggeldenhuis]

Currently the ported esx_vswitch resource does not allow you to do the following:

esx_vswitch { "esx00001.local:vSwitch0":
  ensure    => absent,
  host      => "esx00001.local",
  vswitch   => "vSwitch0",
  transport => Transport['vcenter'],
}

The following additional PR from Dell will fix the issue:
dell-asm@de585f8

@crayfishx

[crayfishx]

@gjngeldenhuis I'm not going to backport this directly, I'm refactoring how the esx_* providers implement the method to find the host (every provider currently has an "almost the same" method for doing it. I'll see if I can use the method in that commit in a more centralized way from the vcenter main provider for all of the esx types.....