Install Python 3 packages before running bootstrap script

Author: blag

actions/workflows/st2_pkg_e2e_test.yaml

@@ -99,12 +99,51 @@ tasks:
         publish:
           - vm_info: <% result().output.vm_info %>
           - vm_id: <% result().output.vm_info.id %>
-        do: get_bootstrap_script
+        do: check_for_ubuntu_xenial
       - when: <% failed() %>
         publish:
           - vm_id: <% result().output.get("vm_info", {}).get("id") %>
           - failed: True
         do: cleanup
+  check_for_ubuntu_xenial:
+    action: core.remote
+    input:
+      hosts: <% ctx().vm_info.private_ip_address %>
+      cmd: cat /etc/issue
+    next:
+      - when: <% succeeded() %>
+        publish:
+          - cat_result: <% result() %>
+        do: echo_result
+      - when: <% succeeded() and "Ubuntu 16" in result().get(ctx().vm_info.private_ip_address).stdout %>
+        do: install_python36
+      - when: <% succeeded() and not "Ubuntu 16" in result().get(ctx().vm_info.private_ip_address).stdout %>
+        do: get_bootstrap_script
+      - when: <% failed() %>
+        do: check_debug_mode
+  echo_result:
+    action: core.echo
+    input:
+      message: '<% ctx().cat_result %>'
+    next:
+      - when: <% succeeded() %>
+        do: install_python36
+  install_python36:
+    action: core.remote_sudo
+    input:
+      hosts: <% ctx().vm_info.private_ip_address %>
+      cmd: |-
+        python3 --version
+        add-apt-repository ppa:deadsnakes/ppa --yes
+        apt-get update
+        apt-get install --yes python3.6
+        patch /etc/st2/st2.conf <<EOF
+        23a24
+        > python3_binary = /usr/bin/python3.6
+        EOF
+    next:
+      - when: <% succeeded() %>
+        do: get_bootstrap_script
   get_bootstrap_script:
     action: core.remote_sudo
     input:
@@ -156,32 +195,6 @@ tasks:
     input:
       hosts: <% ctx().vm_info.private_ip_address %>
       timeout: 600
-    next:
-      - when: <% succeeded() %>
-        do: check_for_ubuntu_xenial
-  check_for_ubuntu_xenial:
-    action: core.remote
-    input:
-      hosts: <% ctx().vm_info.private_ip_address %>
-      cmd: grep 'Ubuntu 16' /etc/issue
-    next:
-      - when: <% succeeded() %>
-        do: install_python36
-      - when: <% failed() %>
-        do: check_debug_mode
-  install_python36:
-    action: core.remote_sudo
-    input:
-      hosts: <% ctx().vm_info.private_ip_address %>
-      cmd: |-
-        python3 --version
-        add-apt-repository ppa:deadsnakes/ppa --yes
-        apt-get update
-        apt-get install --yes python3.6
-        patch /etc/st2/st2.conf <<EOF
-        23a24
-        > python3_binary = /usr/bin/python3.6
-        EOF
     next:
       - when: <% succeeded() %>
         do: check_debug_mode