cpp tests: move unittests directory

cpp tests: move test-dir to src/cpp/tests/ and update bazel files

Author: joshualicht

BUILD

@@ -45,12 +45,12 @@ alias(
 
 test_suite(
     name = "test_kvs_cpp",
-    tests = ["//tests/cpp:test_kvs_cpp"],
+    tests = ["//src/cpp/tests:test_kvs_cpp"],
     visibility = ["//visibility:public"],
 )
 
 test_suite(
     name = "bm_kvs_cpp",
-    tests = ["//tests/cpp:bm_kvs_cpp"],
+    tests = ["//src/cpp/tests:bm_kvs_cpp"],
     visibility = ["//visibility:public"],
 )

src/cpp/BUILD

@@ -19,7 +19,7 @@ filegroup(
         "inc/**/*.hpp",
     ]),
     visibility = [
-        "//tests/cpp:__pkg__",
+        "//src/cpp/tests:__pkg__",
     ],
 )