tramp 2.1.11 completion list force refresh

[Thomas S. Chin]

Hi guys,

Love the Tramp package and have been using it for a while.  I recently 
upgraded from 2.1.3 to 2.1.11 and noticed a discrepancy that I am not 
able to resolve.  In 2.1.3, I am able to get the completion list to 
display updates to a directory (after the list has been previously 
loaded).  Let's say I get a completion list for "/tmp/" and then add a 
new file to that directory.  If I C-x C-f and force a tab complete from 
"/tm" -> "/tmp/" it will show the latest contents of "/tmp/".

Since I have upgraded to 2.1.11, I can't seem to find a setting or a 
means to get the directory listing (completion list) to update to 
reflect changes since tramp loaded it last.  Completion definitely 
works, so this is not an issue with the partial-completion-mode.

I am hoping this is a simple configuration error, but wanted to consult 
with you guys before I attempt to file a bug.  Thank you for any help in 
advance.

Thomas S. Chin