acu95781 - [db_mysql] providers/default.rb - send query to previous_master to be READ_ONLY
Merge branch 'release13.04' into white_13_03_acu95781_short_term_fix_read_only_demoted_master
Merge pull request #310 from rightscale/white_13_03_acu95781_short_term_fix_read_only_demoted_master

White 13 03 acu95781 short term fix read only demoted master