Store consumer's product tags in the database.
Ruby does not support Python style keyword arguments.

In Ruby, `some_method(name="Bob", greeting="Hello")` is syntactically
correct, but it does not do what one might expect.  Instead of allowing
order independent parameters like in Python, it simply assigns the
values to local variables `name` and `greeting`.  Ruby 2.0 and up do
support keyword arguments, but the delimiter is a colon instead of an
equals sign and the method signature must be altered as well.

Since our tests occasionally need to run on RHEL 6, this patch makes
everything 1.9.3 compatible by not using keyword arguments at all.