Update minijail tests with real mocks and packaging testing deps

src/platform/minijail/SConstruct

Index: src/platform/minijail/SConstruct
diff --git a/src/platform/minijail/SConstruct b/src/platform/minijail/SConstruct
index 606fbeec5899e016f9ee152ac350d0f0dee17c53..1f4ed1fe388146a4e42f56bf3e16e2fb31b58ae3 100644
--- a/src/platform/minijail/SConstruct
+++ b/src/platform/minijail/SConstruct
@@ -15,6 +15,7 @@ lib_sources = env.Split("""env.cc
                            options.cc""")
 bin_sources = env.Split("""minijail_main.cc""")
 test_sources = env.Split("""minijail_unittest.cc
+                            options_unittest.cc
                             minijail_testrunner.cc""")
 benchmark_sources = glob.glob("*_microbenchmark.cc")
 
@@ -36,7 +37,7 @@ env_bin = env.Clone()
 env_bin.Program('minijail', lib_sources + bin_sources)
 
 env_test = env.Clone()
-env_test.Append(LIBS=['gtest'])
+env_test.Append(LIBS=['gtest', 'gmock'])
 env_test.Program('minijail_unittests', lib_sources + test_sources)
 
 env_benchmarks = env.Clone()
@@ -44,6 +45,5 @@ env_benchmarks = env.Clone()
 env_benchmarks.Append(LIBS=['microbenchmark_main.a',
                             # Since we want to run this on a prod image,
                             # we just statically pull in gtest.a.
-                            File('/usr/lib/libgtest.a')],
-                      LIBPATH=['../microbenchmark'])
+                            File('/usr/lib/libgtest.a')])
 env_benchmarks.Program('minijail_benchmarks', benchmark_sources)