Revert "Revert "external/boringssl: sync with upstream.""

This reverts commit 03bcf618b7ed811b305845461fbb5497dfe55ac3.

No changes here. trusty build was fixed with the required rules.mk changes.
diff --git a/src/crypto/pkcs8/CMakeLists.txt b/src/crypto/pkcs8/CMakeLists.txt
index ce5bce1..9550109 100644
--- a/src/crypto/pkcs8/CMakeLists.txt
+++ b/src/crypto/pkcs8/CMakeLists.txt
@@ -27,3 +27,4 @@
 
 target_link_libraries(pkcs8_test crypto)
 target_link_libraries(pkcs12_test crypto)
+add_dependencies(all_tests pkcs8_test pkcs12_test)