Fix: blueprints generated invalid passwords

Some times the tests would fail due to Faker generating a password that
was less than 8 characters long. We now always generate 10 characters.

spec/support/blueprints.rb

@@ -10,12 +10,12 @@
 
 User.blueprint do
   email { Faker::Internet.email }
-  password { Faker::Name.name[0..10] }
+  password { SecureRandom.alphanumeric(10) }
   confirmed_at { 2.days.ago }
 end
 
 ExtraPassword.blueprint do
-  password { Faker::Name.name[0..10] }
+  password { SecureRandom.alphanumeric(10) }
 end
 
 AuthorizationCode.blueprint do