give vagrant vm enough memory so that tests pass consistently

setup.py

@@ -32,7 +32,7 @@ def find_package_data(package):
 
 setuptools.setup(
         name='brozzler',
-        version='1.1b8.dev124',
+        version='1.1b8.dev125',
         description='Distributed web crawling with browsers',
         url='https://github.com/internetarchive/brozzler',
         author='Noah Levitt',

vagrant/Vagrantfile

@@ -6,6 +6,11 @@ Vagrant.configure(2) do |config|
 
   config.vm.synced_folder "..", "/brozzler"
 
+  # bump up memory to avoid "can't start new thread" errors
+  config.vm.provider "virtualbox" do |v|
+    v.memory = 1024
+  end
+
   config.vm.provision "ansible" do |ansible|
     ansible.inventory_path = "../ansible/hosts-vagrant"
     ansible.playbook = "../ansible/playbook.yml"