re-add stretch64 vm, fixes #7010

looks like rhel7 and co is still supported and needs the old glibc.

debian stretch is not supported any more by debian, so the binaries
created on this are provided on a "use on your own risk" basis.

reverts fc67453bf3e17000da10ba3a4dfb691f39294633

Vagrantfile

@@ -314,6 +314,22 @@ Vagrant.configure(2) do |config|
     b.vm.provision "run tests", :type => :shell, :privileged => false, :inline => run_tests("buster64", ".*none.*")
   end
 
+  config.vm.define "stretch64" do |b|
+    b.vm.box = "debian/stretch64"
+    b.vm.provider :virtualbox do |v|
+      v.memory = 1024 + $wmem
+    end
+    b.vm.provision "fs init", :type => :shell, :inline => fs_init("vagrant")
+    b.vm.provision "packages debianoid", :type => :shell, :inline => packages_debianoid("vagrant")
+    b.vm.provision "install pyenv", :type => :shell, :privileged => false, :inline => install_pyenv("stretch64")
+    b.vm.provision "install pythons", :type => :shell, :privileged => false, :inline => install_pythons("stretch64")
+    b.vm.provision "build env", :type => :shell, :privileged => false, :inline => build_pyenv_venv("stretch64")
+    b.vm.provision "install borg", :type => :shell, :privileged => false, :inline => install_borg("llfuse")
+    b.vm.provision "install pyinstaller", :type => :shell, :privileged => false, :inline => install_pyinstaller()
+    b.vm.provision "build binary with pyinstaller", :type => :shell, :privileged => false, :inline => build_binary_with_pyinstaller("stretch64")
+    b.vm.provision "run tests", :type => :shell, :privileged => false, :inline => run_tests("stretch64", ".*(fuse3|none).*")
+  end
+
   config.vm.define "freebsd64" do |b|
     b.vm.box = "generic/freebsd13"
     b.vm.provider :virtualbox do |v|