update to train's new file interface: symlink + uid + gid

[arlimus]

No description provided.

[alexpop]

Spot on:

=> File /boot/grub/grub.conf
[2] pry(#<#<Class:0x007f80bac944f0>>)> f=file("/etc/grub.conf")
=> File /boot/grub/grub.conf
[3] pry(#<#<Class:0x007f80bac944f0>>)> f.path
=> "/boot/grub/grub.conf"
[4] pry(#<#<Class:0x007f80bac944f0>>)> f.mode.to_s(8)
=> "600"
[5] pry(#<#<Class:0x007f80bac944f0>>)> f.source.mode.to_s(8)
=> "777"
[6] pry(#<#<Class:0x007f80bac944f0>>)> f.symlink?
=> true
[7] pry(#<#<Class:0x007f80bac944f0>>)> f.source.symlink?
=> true
[8] pry(#<#<Class:0x007f80bac944f0>>)> f.source.path
=> "/etc/grub.conf"

[alexpop]

Need to release train first