Add file_contexts for com.android.ipsec

com.android.ipsec will be shipped as a mainline module in APEX
format. A file_contexts is required for building an APEX.

Bug: 143905344
Test: Built and installed apex on device
Change-Id: I9f9a6190886181e9e4254ea2a984d338fda533da
diff --git a/apex/com.android.ipsec-file_contexts b/apex/com.android.ipsec-file_contexts
new file mode 100644
index 0000000..270f0e1
--- /dev/null
+++ b/apex/com.android.ipsec-file_contexts
@@ -0,0 +1,2 @@
+(/.*)?                          u:object_r:system_file:s0
+/lib(64)?(/.*)?                 u:object_r:system_lib_file:s0