[SR-Users] LCR module : re load_gws uri errors

[Juha Heinanen]

ycaner writes:

>       in load_gws function
>       there is a delete_avp for gw_uri_avp as you mentioned . but in my
>       view it needs a delete_avp for ruri_user_avp. 
>       Because it is reloading gws for different route.

I added deletion of possible old ruri_user_avp value when next_gw() is
called first time after load_gws().

It is currently in master branch only, but I can commit also to 4.3
branch if this fixes the issue.

-- Juha