Avoid unnecessary warning logs in XmlUtil

Add logic to avoid displaying warnings for valid values:
IP assignment is DHCP or UNASSIGNED, and when Proxy settings are
NONE or UNASSIGNED.

Bug: 151955279
Test: compiles
Change-Id: I91e8dd2a7079bee786099a594ca02e44eeeb0bdf
1 file changed
tree: 20e5639bb0424419438bd3f42988ebe10d672d2f
  1. apex/
  2. service/
  3. PREUPLOAD.cfg