Add modules-utils-os to service-connectivity

service-connectivity needs the library so that module utilities are statically
linked, not picked up from the framework jar as hidden symbols.

Bug: 170598012
Change-Id: I1045b3784a4bdb902f44d848ccddb304986631c3
Test: m
diff --git a/service/Android.bp b/service/Android.bp
index f20b89f..e65b7b4 100644
--- a/service/Android.bp
+++ b/service/Android.bp
@@ -63,6 +63,7 @@
         "unsupportedappusage",
     ],
     static_libs: [
+        "modules-utils-os",
         "net-utils-device-common",
         "net-utils-framework-common",
         "netd-client",