Android 7.1.1 Release 32 (N4F26W)
xmlrpcpp: Add debug log for incoming XML request.

Dump out the entire XML request received which can be useful in
debugging.

BUG: 24335496
Change-Id: If7b57b670a2062829525594d35e5e17514c71991
TEST:
`test_that $host network_WiFi_SimpleConnect.wifi_check11g` &&
adb shell cat /data/shill_xmlrpc_server.log
1 file changed