pedantmysql doesn't work with rails dbconsole

[timothysmith0609]

While setting up cod-app for cloud, I realized that rails dbconsole would fail with unknown command-line client for #{database_name}.

I dug through the dbconsole source and attached a few puts to the dbconsole in cluster and observed the following output:

The regex match on the case predicate in dbconsole.rb will always fail since when /^(jdbc)?mysql/ begins with pedant, not mysql.

Not sure if this is worthy of a fix since I don't know how often rails dbconsole gets used, but a simple solution seems to be simply renaming the adapter to mysql_pedant.

cc @casperisfine, @goldenson