[Ubuntu] use pipx to install ansible (#3015)

* use pipx to install ansible

* update info

images/linux/scripts/installers/ansible.sh

@@ -4,16 +4,11 @@
 ##  Desc:  Installs Ansible
 ################################################################################
 
-# Source the helpers for use with the script
-source $HELPER_SCRIPTS/os.sh
-
-# ppa:ansible/ansible doesn't contain packages for Ubuntu20.04
-if isUbuntu16 || isUbuntu18 ; then
+# this script is used only on Ubuntu 16.04
+# for Ubuntu 18.04 and 20.04 we use pipx ansible-base package
+# Install latest Ansible
 add-apt-repository ppa:ansible/ansible
 apt-get update
-fi
-
-# Install latest Ansible
 apt-get install -y --no-install-recommends ansible
 
 invoke_tests "Tools" "Ansible"

images/linux/toolsets/toolset-1804.json

@@ -218,6 +218,10 @@
         {
             "package": "aws-sam-cli",
             "cmd": "sam"
+        },
+        {
+            "package": "ansible-base",
+            "cmd": "ansible"
         }
     ],
     "dotnet": {

images/linux/toolsets/toolset-2004.json

@@ -219,6 +219,10 @@
         {
             "package": "aws-sam-cli",
             "cmd": "sam"
+        },
+        {
+            "package": "ansible-base",
+            "cmd": "ansible"
         }
     ],
     "dotnet": {

images/linux/ubuntu1804.json

@@ -188,7 +188,6 @@
         {
             "type": "shell",
             "scripts": [
-                "{{template_dir}}/scripts/installers/ansible.sh",
                 "{{template_dir}}/scripts/installers/azcopy.sh",
                 "{{template_dir}}/scripts/installers/azure-cli.sh",
                 "{{template_dir}}/scripts/installers/azure-devops-cli.sh",

images/linux/ubuntu2004.json

@@ -188,7 +188,6 @@
         {
             "type": "shell",
             "scripts": [
-                "{{template_dir}}/scripts/installers/ansible.sh",
                 "{{template_dir}}/scripts/installers/azcopy.sh",
                 "{{template_dir}}/scripts/installers/azure-cli.sh",
                 "{{template_dir}}/scripts/installers/azure-devops-cli.sh",