Use a very small cache in the test kitchen run
Use a very small cache in the test kitchen run

Avoids errors and failures in the startup due to the small disk / memory
in the TK instances

akaasjager/squid-icap,jpmat296/squid,bitmonk/chef-squid,kevinrbabcock/squid,jpmat296/squid,PrecisionNutrition/squid,chef-cookbooks/squid,opscode-cookbooks/squid,criteo-forks/squid,chef-cookbooks/squid,bitmonk/chef-squid,kevinrbabcock/squid,PrecisionNutrition/squid,snkutlu/squid,snkutlu/squid,opscode-cookbooks/squid,akaasjager/squid-icap,criteo-forks/squid