Replication and load balancing plugin for mysqlnd Formula was removed
Last versions were
php54-mysqlnd_ms requires the following formula to be installed:
autoconf 2.69 Automatic configure script builder

Recent formula history

Mike McQuaid Deprecate tap.
Baptiste Fontaine php54-mysqlnd_ms: audit fixes
Andy Blyler Update URLs to use HTTPS
Xu Cheng remove root_url in bottle block
Alan Ivey php54-mysqlnd_ms: update to 1.5.2

Formula code at GitHub