Verify default vswitch names and expected port groups

[bowbot]

Expands and upgrades can fail sometimes if the storage and management switches and port group names have been changed in ESX clusters.

The /opt/springpath/springpath_default.tunes has what we are expecting to be present.

[networking]
portgroup_hypervisor_mgmt=Management Network
portgroup_hypervisor_data=Storage Hypervisor Data Network
portgroup_controller_mgmt=Storage Controller Management Network
portgroup_controller_data=Storage Controller Data Network
portgroup_hypervisor_vmotion=vMotion Network

[vswitch_mgmt]
vswitch=vswitch-hx-inband-mgmt
[vswitch_storage_data]
vswitch=vswitch-hx-storage-data

There should be some new checks added into the script which verifies that these names are present and in use.