Fix debian-8 update (elastic#42056)

On debian-8, when trying to apt-get update, it currently (sometimes)
fails on one of the extra repositories. This failure to update causes
keys to not be updated, which later can cause some packages to not
install due to lack of key verification. This commit removes the
troublesome repository before we attemp to update.

closes elastic#42017

Vagrantfile

@@ -67,7 +67,10 @@ Vagrant.configure(2) do |config|
   'debian-8'.tap do |box|
     config.vm.define box, define_opts do |config|
       config.vm.box = 'elastic/debian-8-x86_64'
-      deb_common config, box
+      deb_common config, box, extra: <<-SHELL
+        # this sometimes gets a bad ip, and doesn't appear to be needed
+        rm /etc/apt/sources.list.d/http_debian_net_debian.list
+      SHELL
     end
   end
   'debian-9'.tap do |box|
@@ -159,8 +162,8 @@ def deb_common(config, name, extra: '')
       s.inline = "sudo sed -i '/tty/!s/mesg n/tty -s \\&\\& mesg n/' /root/.profile"
   end
   extra_with_lintian = <<-SHELL
-    install lintian
     #{extra}
+    install lintian
   SHELL
   linux_common(
     config,