Reset certain columns in eas keep_tables
Reset certain columns in eas keep_tables

Summary:
With just ./tools/clear-db (i.e. --with users not specified), we want to keep the easaccount table but reset
eas_account_sync_key=0 (i.e. get rid of all sync state info)

See matching push to inbox-util

Test Plan: Expected effect for both gmail, EAS.

Reviewers: spang

Differential Revision: https://review.inboxapp.com/D60

wakermahmud/sync-engine,PriviPK/privipk-sync-engine,Eagles2F/sync-engine,jobscore/sync-engine,rmasters/inbox,ErinCall/sync-engine,PriviPK/privipk-sync-engine,PriviPK/privipk-sync-engine,PriviPK/privipk-sync-engine,jobscore/sync-engine,Eagles2F/sync-engine,ErinCall/sync-engine,wakermahmud/sync-engine,rmasters/inbox,gale320/sync-engine,ErinCall/sync-engine,EthanBlackburn/sync-engine,wakermahmud/sync-engine,EthanBlackburn/sync-engine,gale320/sync-engine,closeio/nylas,ErinCall/sync-engine,closeio/nylas,wakermahmud/sync-engine,PriviPK/privipk-sync-engine,rmasters/inbox,jobscore/sync-engine,gale320/sync-engine,EthanBlackburn/sync-engine,ErinCall/sync-engine,closeio/nylas,rmasters/inbox,Eagles2F/sync-engine,Eagles2F/sync-engine,nylas/sync-engine,closeio/nylas,gale320/sync-engine,nylas/sync-engine,nylas/sync-engine,gale320/sync-engine,jobscore/sync-engine,wakermahmud/sync-engine,EthanBlackburn/sync-engine,Eagles2F/sync-engine,EthanBlackburn/sync-engine,nylas/sync-engine