Update buckifier to unblock future internal release (#6726)

Summary:
Some recent PRs added new source files or modified TARGETS file manually.
During next internal release, executing the following command will revert the
manual changes.
Update buckifier so that the following command
```
python buckfier/buckify_rocksdb.py
```
does not change TARGETS file.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6726

Test Plan:
```
python buckifier/buckify_rocksdb.py
```

Reviewed By: siying

Differential Revision: D21098930

Pulled By: riversand963

fbshipit-source-id: e884f507fefef88163363c9097a460c98f1ed850

TARGETS

@@ -94,9 +94,6 @@ is_opt_mode = build_mode.startswith("opt")
 # -DNDEBUG is added by default in opt mode in fbcode. But adding it twice
 # doesn't harm and avoid forgetting to add it.
 ROCKSDB_COMPILER_FLAGS += (["-DNDEBUG"] if is_opt_mode else [])
-ROCKSDB_STRESS_DEPS = (
-        [":rocksdb_lib", ":rocksdb_test_lib"] if not is_opt_mode else [":rocksdb_lib"]
-)
 
 sanitizer = read_config("fbcode", "sanitizer")
 
@@ -207,6 +204,7 @@ cpp_library(
         "memory/arena.cc",
         "memory/concurrent_arena.cc",
         "memory/jemalloc_nodump_allocator.cc",
+        "memory/memkind_kmem_allocator.cc",
         "memtable/alloc_tracker.cc",
         "memtable/hash_linklist_rep.cc",
         "memtable/hash_skiplist_rep.cc",
@@ -439,7 +437,10 @@ cpp_library(
     os_deps = ROCKSDB_OS_DEPS,
     os_preprocessor_flags = ROCKSDB_OS_PREPROCESSOR_FLAGS,
     preprocessor_flags = ROCKSDB_PREPROCESSOR_FLAGS,
-    deps = ROCKSDB_STRESS_DEPS,
+    deps = [
+        ":rocksdb_lib",
+        ":rocksdb_test_lib",
+    ],
     external_deps = ROCKSDB_EXTERNAL_DEPS,
 )
 
@@ -1186,6 +1187,13 @@ ROCKS_TESTS = [
         [],
         [],
     ],
+    [
+        "memkind_kmem_allocator_test",
+        "memory/memkind_kmem_allocator_test.cc",
+        "serial",
+        [],
+        [],
+    ],
     [
         "memory_test",
         "utilities/memory/memory_test.cc",

buckifier/buckify_rocksdb.py

@@ -173,7 +173,7 @@ def generate_targets(repo_path, deps_map):
         src_mk.get("ANALYZER_LIB_SOURCES", [])
         + src_mk.get('STRESS_LIB_SOURCES', [])
         + ["test_util/testutil.cc"],
-        [":rocksdb_lib"])
+        [":rocksdb_lib", ":rocksdb_test_lib"])
 
     print("Extra dependencies:\n{0}".format(str(deps_map)))
     # test for every test we found in the Makefile