feat: Support AKS custom cloud (Azure#3662)

Revert "Revert "fix: Fix distro related change (Azure#3642)""

This reverts commit ec39e22.

chore: Remove one duplicated line (Azure#3659)

fix: Fix distro related change (Azure#3642)

* Fix distro related change

* add 1804gen2

chore: Remove one duplicated line (Azure#3659)

fix: Support USNat and USSec (Azure#3657)

feat: Add aks custom cloud and CSIProxyURL (Azure#3652)

* feat: add aks custom cloud in GetTargetEnv

* Add CSIProxyURL

fix: only remove CRI if re-installing (Azure#3654)

chore: update Windows default VHD for July (Azure#3619) (Azure#3640)

Co-authored-by: James Sturtevant <jstur@microsoft.com>

chore: Pick signed powershell scripts, containerd, vhd 7b and hosts c…

…onfig agent support for Windows (Azure#3630)

* Add staging Windows scripts

* Update parts folder for Windows

* feat: Consume signed powershell scripts

* update the signed package version (Azure#3584)

* fix: use mcr.azk8s.cn for Azure CNI in China cloud

* feat: add hosts config agent support for Windows nodes

* Generate templates_generated.go

* feat: Experimental support for Windows+ContainerD (Azure#1322)

* chore: update Windows default VHD for July (Azure#3619)

* fix

Co-authored-by: James Sturtevant <jstur@microsoft.com>