enhance(vmware-lib): v4.13 release enhancements

Enhancements for vmware-lib capabilities for the v4.13 release.

The following list of [NEW] and [FIX] changes are addressed in this release:

• [NEW] Initial support for "metro stretch" clusters where ESXi hosts are managed by different DRP Endpoints - requires wiring remote DRP Endpoint Auth credentials in Multi-Site Manager cluster relationships (see drp/auth-override) - this is a stop-gap until MSM supports better DRP endpoint to endpoint authentication in single Workflow execution patterns
• [NEW] Adds connection validation of the govc about connection check (see: esxi/connect-method)
• [NEW] If communicating to VCSA/vCenter, can selectively switch to using vcenter/* connection Param definitions instead of the default govc/* - handles multi workflow deploy and configure steps without having to switch Profiles for connection API endpoint
• [NEW] VSAN disk claiming now supports more than 7 disks; fully supports 5 groups of up to 7 disks - each Group must have only 1 Cache disk and 1 to 7 Capacity disks, Groups can be dynamically balanced to achieve closest possible parity in all Groups with closely equal Capacity disks from the found count of disks. See: esxi/vsan-claim-cache-count, esxi/vsan-claim-capacity-count-size, etc)
• [NEW] Disk claiming ruleset of vsan_witness which allows a VSAN Witness VM to be deployed and it's 2 virtual disks claimed for the VSAN cluster - required for Witness deployment/cluster enablement
• [NEW] VSAN Witness VM deployment (via standard OVFTool deploy workflow), and configuration and use in standdard VSAN Witness clusters (does not yet support Stretch Cluster configurations)
• [FIX] Enhancements and cleanups to the ESXi based Datastore creation Task (esxi-datastore-parted)
• [FIX] Better password handling in the govc-cluster-create steps
• [NEW] esxi/dvs-mappings now supports Multiple VMNIC definitions for Network Interface Card (NIC) Teaming/Bonding configurations in ESXi distributed virtual switches (dVS / vDS)

The following features/changes have been added but are not fully completed or available in the v4.13.0 release. They may become available in v4.13.x or v4.14.0.

• [NEW] Support for VSAN Witness deployment in a VSAN Stretch Cluster configuration
• [NEW] Support for Multi-Site Manager "stretch" configuration with VSAN Stretch clusters - ESXi Hosts on separate DRP Endpoints being configured in a single Workflow construct