Move linux provision scripts to virtual-environments (#1714)

* add linux-related scripts from MMS provisioner

* removed EOL

* removed Ubuntu condition

* moved PATH checking to cleanup section

* add clarification for cgroups names

* names alignment

* removed memory-configuration and agent specific scripts

* renamed folder to psot-generation, added template instructions

* moved key import to git installation

* moved PATH check to post-deployment instead of cleanup script

* add scripts

* output tests file

* add startup logic

* add powershell module for furute helpers

* removed unused modules

* copy to tmp folder because of permissions, copy to opt on post-generation step

* removed Pester test

* change post-generation location

* incorrect if statement

Co-authored-by: Leonid Lapshin <originalnoe-nazvanie@yandex.ru>

images/linux/ubuntu1604.json

@@ -89,6 +89,11 @@
             "source": "{{template_dir}}/scripts/installers",
             "destination": "{{user `installer_script_folder`}}"
         },
+        {
+            "type": "file",
+            "source": "{{ template_dir }}/post-generation",
+            "destination": "{{user `image_folder`}}"
+        },
         {
             "type": "file",
             "source": "{{ template_dir }}/scripts/SoftwareReport",