KEP 1981: Windows privileged container KEP updates for alpha (kubernetes#2288)

* Windows privileged container KEp alpha updates

* updagint TOC

* fixing lots of typos

* updates with feedback for liggitt

* fixing kep.yaml

* minor KEP feedback

* minor KEP feedback

* Rename fields to HostJob

* KEP.yaml updates

* Adding PRR yaml file and approver

* Fixing KEP metadata

* s/hostJob/hostProcess

* responding to feedback from jsturtevant

* fixing status in kep.yaml

* a few minor updates

* Clarifying container mounts section and validation rules section

* Updates from Liggitt's feedback

* fixup

* updating volume support

* updating info about how volume mount paths are derived

* minor updates

* Clarifying HostPID/HostIPC usage

* reworking hostPID section

Author: marosset

keps/prod-readiness/sig-windows/1981.yaml

@@ -0,0 +1,3 @@
+kep-number: 1981
+alpha:
+  approver: "@deads2k"