netd: Enable clang-tidy and fix all warnings

Bug: 65246407
Test: m netd && system/netd/tests/runtests.sh
Change-Id: I1d22b2bc317fe7218ccde78859ed0623d6a1f8df
diff --git a/server/BandwidthController.h b/server/BandwidthController.h
index efacdce..adf64c8 100644
--- a/server/BandwidthController.h
+++ b/server/BandwidthController.h
@@ -47,10 +47,10 @@
     int getInterfaceQuota(const std::string& iface, int64_t* bytes);
     int removeInterfaceQuota(const std::string& iface);
 
-    int addNaughtyApps(int numUids, char *appUids[]);
-    int removeNaughtyApps(int numUids, char *appUids[]);
-    int addNiceApps(int numUids, char *appUids[]);
-    int removeNiceApps(int numUids, char *appUids[]);
+    int addNaughtyApps(int numUids, const char* const appUids[]);
+    int removeNaughtyApps(int numUids, const char* const appUids[]);
+    int addNiceApps(int numUids, const char* const appUids[]);
+    int removeNiceApps(int numUids, const char* const appUids[]);
 
     int setGlobalAlert(int64_t bytes);
     int removeGlobalAlert();