Let's be really pedantic about the status of our submodules.

tools/run_tests/run_sanity.sh

@@ -37,3 +37,14 @@ export TEST=true
 cd `dirname $0`/../..
 
 ./tools/buildgen/generate_projects.sh
+
+submodules=`mktemp`
+
+git submodule > $submodules
+
+diff -u $submodules - << EOF
+ 05b155ff59114735ec8cd089f669c4c3d8f59029 third_party/gflags (v2.1.0-45-g05b155f)
+ 3df69d3aefde7671053d4e3c242b228e5d79c83f third_party/openssl (OpenSSL_1_0_2a)
+ 644a6a1da71385e9d7a7a26b3476c93fdd71788c third_party/protobuf (v3.0.0-alpha-1-35-g644a6a1)
+ 50893291621658f355bc5b4d450a8d06a563053d third_party/zlib (v1.2.8)
+EOF