vagrant: Add hyperV support to vagrant config.
vagrant: Add hyperV support to vagrant config.

HyperV is native to Windows and should give a
significant performance boost over other vagrant
providers. Running the Zulip development environment
using HyperV requires a few custom changes. This
commit aims to add HyperV support to Zulip's Vagrant
configuration.

Fixes part of zulip/zulip#16994

andersk/zulip,kou/zulip,zulip/zulip,rht/zulip,hackerkid/zulip,andersk/zulip,kou/zulip,andersk/zulip,punchagan/zulip,punchagan/zulip,hackerkid/zulip,rht/zulip,rht/zulip,rht/zulip,punchagan/zulip,eeshangarg/zulip,rht/zulip,hackerkid/zulip,andersk/zulip,kou/zulip,zulip/zulip,zulip/zulip,kou/zulip,andersk/zulip,eeshangarg/zulip,eeshangarg/zulip,zulip/zulip,eeshangarg/zulip,eeshangarg/zulip,eeshangarg/zulip,kou/zulip,zulip/zulip,eeshangarg/zulip,punchagan/zulip,kou/zulip,kou/zulip,hackerkid/zulip,hackerkid/zulip,punchagan/zulip,andersk/zulip,punchagan/zulip,punchagan/zulip,rht/zulip,rht/zulip,hackerkid/zulip,zulip/zulip,andersk/zulip,hackerkid/zulip,zulip/zulip