[LSC] Add LOCAL_LICENSE_KINDS to frameworks/libs/net

Added SPDX-license-identifier-Apache-2.0 to:
  client-libs/Android.bp
  client-libs/tests/unit/Android.bp
  common/Android.bp
  common/native/bpf_syscall_wrappers/Android.bp
  common/native/netjniutils/Android.bp
  common/tests/unit/Android.bp

Bug: 68860345
Bug: 151177513
Bug: 151953481

Test: m all

Exempt-From-Owner-Approval: janitorial work

Change-Id: I2d4abaee12c1f20c39a7e2c9e02e2fccb96fa3ee
Merged-in: I6942c6844c89048f785f2b6eaa4bb33a24fa6f93

staticlibs/client-libs/Android.bp

@@ -1,3 +1,7 @@
+package {
+    default_applicable_licenses: ["Android-Apache-2.0"],
+}
+
 java_library {
     name: "netd-client",
     srcs: ["netd/**/*"],

staticlibs/client-libs/tests/unit/Android.bp

@@ -1,3 +1,7 @@
+package {
+    default_applicable_licenses: ["Android-Apache-2.0"],
+}
+
 android_library {
     name: "NetdStaticLibTestsLib",
     srcs: [