Rename ANS to ONS

Rename AlternativeNetworkService to OpportunisticNetworkService
Bug: 118347827
Test: compile
Merged-In: I23b0caadd1801c104806fa438fc9054d8a31962e
Change-Id: I23b0caadd1801c104806fa438fc9054d8a31962e

private/service_contexts

@@ -69,7 +69,7 @@ gpu                                       u:object_r:gpu_service:s0
 hardware                                  u:object_r:hardware_service:s0
 hardware_properties                       u:object_r:hardware_properties_service:s0
 hdmi_control                              u:object_r:hdmi_control_service:s0
-ians                                      u:object_r:radio_service:s0
+ions                                      u:object_r:radio_service:s0
 idmap                                     u:object_r:idmap_service:s0
 incident                                  u:object_r:incident_service:s0
 inputflinger                              u:object_r:inputflinger_service:s0