Download and verify the Ruby installer, then move into place
Download and verify the Ruby installer, then move into place

This should reduce or remove race conditions while downloading the same
file on multiple container instances.

Signed-off-by: Bryan McLellan <9da9e2973b9c72b95f1bc7169993146760fceeb1@loftninjas.org>

mwrock/chef,jaymzh/chef,nvwls/chef,nvwls/chef,higanworks/chef,mattray/chef,gene1wood/chef,gene1wood/chef,jaymzh/chef,jaymzh/chef,mattray/chef,nvwls/chef,tas50/chef-1,chef/chef,MsysTechnologiesllc/chef,tas50/chef-1,nvwls/chef,gene1wood/chef,chef/chef,mattray/chef,chef/chef,nvwls/chef,higanworks/chef,nvwls/chef,mattray/chef,MsysTechnologiesllc/chef,mwrock/chef,tas50/chef-1,chef/chef,higanworks/chef,mwrock/chef,higanworks/chef,mwrock/chef,mattray/chef,MsysTechnologiesllc/chef,tas50/chef-1,gene1wood/chef,higanworks/chef,jaymzh/chef,MsysTechnologiesllc/chef