Update non-gems distributions to use sqlite3 as the default, matching the "rails" command default [#1270 status:committed]
Update non-gems distributions to use sqlite3 as the default, matching the "rails" command default [#1270 status:committed]

Signed-off-by: David Heinemeier Hansson <aa743a0aaec8f7d7a1f01442503957f4d7a2d634@loudthinking.com>

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