Confine ping, but leave it permissive for now.

Change-Id: I3fda2946271456dbe0905651c5015d9eb120a8ea
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>

ping.te

 type ping, domain;
+permissive ping;
 type ping_exec, exec_type, file_type;
 domain_auto_trans(shell, ping_exec, ping)
-unconfined_domain(ping)
+
+allow ping self:capability net_raw;
+allow ping self:rawip_socket create_socket_perms;
+allow ping self:udp_socket create_socket_perms;
+allow ping node:rawip_socket node_bind;
+allow ping dnsproxyd_socket:sock_file write;
+allow ping netd:unix_stream_socket connectto;
+allow ping devpts:chr_file rw_file_perms;
+allow ping shell:fd use;