ip_diag_ping: remove Tumblr, switch to WWW.

tumblr.com responds to test pings but blocks pings in
larger volumes. We just get ERR.

Switch to the www.* site for each property. In the case
of google.com this directs the traffic to a different
set of GFEs, others may be similar.

Fixes b/33086137

Change-Id: Ia2c1ca2a47b172680f26d3d5188c836617de0fe1
1 file changed