Bump to 1.15.2
Bump to 1.15.2

mbroadst/rethunk,marshall007/rethinkdbdash,tswayne/rethinkdbdash,mbroadst/rethinkdbdash,beni55/rethinkdbdash,neumino/rethinkdbdash,andrerpena/rethinkdbdash,JohnyDays/rethinkdbdash,abhishekgahlot/rethinkdbdash,adammcarth/rethinkdbdash,kulbirsaini/rethinkdbdash