…defaults, remove duplication
Or else, provisioning fails
…ng the rvm function
Vagrant 0.7.6 sets home to /root (rightfully so) when using sudo.
Package installation causes PG to start/restart and it takes time. So when we first do that and only then set up sysctl values like kernel.shmmax, which operations completes first is undetermined, but is very important for PG's ability to start. So set sysctl values as early as possible.
… create race conditions)