fixed exception logging in GF: the first unsucessful attempt to obtain JAXB context for WADL
  is getting logged in fine level now, according to what we do in Jersey 2.

Change-Id: I62aac3109c96606533b78513908467ce5bb328bc
Merge "fixed exception logging in GF: the first unsucessful attempt to obtain JAXB context for WADL   is getting logged in fine level now, according to what we do in Jersey 2."