PostgreSQL install on Ubuntu/Windows. (#636)

* added windows installation script for postgresql

* removed if from Start-PostreSQL

* added script to packar template.

* changed postgresql.sh for ubuntu.

* postgresql stop and disalbe services.

* change name of the functions

* Stop postgreSQL after validation instead of start.

* added validation and re-work installation prcoedur

* remove redundunt code from psql

* correct intendation

* path to Path

* added PostgreSQL validation procedure.

* Removed useless last line.

* redundunt parameter passed in function call.

* removed repeated part of code.

* removed Stop function since it was useless.

* spaces

* spaces =

* Update Windows2019-Azure.json

* resolve confictls

* added validate and install postgresql

* added password to choco install and variables.

* add new system variables.

* added --params flag

* added correct quotas

* added logging for PostgreSQL install

Co-authored-by: Dariy.Nurgaleev <d.nurgaleev@trueengineering.ru>

images/win/Windows2019-Azure.json

@@ -621,6 +621,12 @@
                 "{{ template_dir }}/scripts/Installers/Install-Vcpkg.ps1"
             ]
         },
+        {
+            "type": "powershell",
+            "scripts":[
+                "{{ template_dir }}/scripts/Installers/Install-PostgreSQL.ps1"
+            ]
+        },
         {
             "type": "powershell",
             "scripts":[
@@ -944,6 +950,12 @@
                 "{{ template_dir }}/scripts/Installers/Validate-Vcpkg.ps1"
             ]
         },
+        {
+            "type": "powershell",
+            "scripts":[
+                "{{ template_dir }}/scripts/Installers/Validate-PostgreSQL.ps1"
+            ]
+        },
         {
             "type": "powershell",
             "scripts":[