Update Vagrant setup to Debian Buster and Python 3

Vagrantfile

@@ -2,7 +2,7 @@
 # vi: set ft=ruby :
 
 Vagrant.configure(2) do |config|
-  config.vm.box = "debian/stretch64"
+  config.vm.box = "debian/buster64"
 
   config.vm.hostname = "gvaldap.local"
   config.vm.network "private_network", ip: "172.16.3.3", lxc__bridge_name: 'vlxcbr1'
@@ -14,6 +14,7 @@ Vagrant.configure(2) do |config|
 
   config.vm.provision :salt do |salt|
       salt.bootstrap_script = "salt/bootstrap.sh"
+      salt.bootstrap_options = "-x python3"
       salt.minion_id = "gvaldap"
       salt.masterless = true
       salt.run_highstate = true

docs/changelog.rst

@@ -1,6 +1,8 @@
 Changelog
 =========
 
+* :support:`-` update Vagrant setup to Debian Buster and Python 3
+
 * :release:`0.6.0 <2020-03-03>`
 * :support:`-` add Python 3 support
 * :support:`-` upgrade to Django 2.2.10

salt/bootstrap.sh

@@ -1,19 +1,21 @@
 #!/bin/sh -
 
 apt-get update
-apt-get install -y python-cryptography
+apt-get install -y python3-cryptography
+
+export salt_bootstrap_url=https://bootstrap.saltstack.com/
 
 # We just download the bootstrap script by default and execute that.
 if [ -x /usr/bin/fetch ]; then
-    /usr/bin/fetch -o - https://raw.githubusercontent.com/saltstack/salt-bootstrap/stable/bootstrap-salt.sh | sh -s -- "$@"
+    /usr/bin/fetch -o - $salt_bootstrap_url | sh -s -- "$@"
 elif [ -x /usr/bin/curl ]; then
-    /usr/bin/curl -L https://raw.githubusercontent.com/saltstack/salt-bootstrap/stable/bootstrap-salt.sh | sh -s -- "$@"
+    /usr/bin/curl -L $salt_bootstrap_url | sh -s -- "$@"
 else
-    python \
-        -c 'import urllib; print urllib.urlopen("https://raw.githubusercontent.com/saltstack/salt-bootstrap/stable/bootstrap-salt.sh").read()' \
-        | sh -s -- "$@"
+    python3 -c "from urllib.request import urlopen; print(urlopen(\"$salt_bootstrap_url\").read().decode('utf-8'))" | sh -s -- "$@"
 fi
 
+mkdir -p /etc/salt
+
 cat >/etc/salt/minion <<EOF
 file_client: local