revert ccd config to dynamic didn't work

[jducifuentes]

ccd config file didn't update (remove static config) after you select dynamic en web ui if previously you add a static ip per client.

Steps to replicate:

create user -> edit routes -> mark "static address" and assign an IP. (at this point all works flawlesly) client gets its static IP

then

edit routes -> unmark "static address" (to get dynamic address) . (at this point client still having its old static IP)

in ccd directory client file isn't change (removed or emptyed)

in other hand modifying ip works well. I mean change i.e. 10.8.1.2 with 10.8.1.3 is reflected ok in ccd config file.

[pashcovich]

you can enter dynamic as a value for this field and it should work