Disable 3 tests which fail on tf 1.12.1.

tensorflow/contrib/constrained_optimization/BUILD

@@ -47,6 +47,9 @@ py_test(
         "//tensorflow/python:client_testlib",
         "//third_party/py/numpy",
     ],
+    tags = [
+        "no_oss",
+    ],
 )
 
 # NOTE: This library can't be "testonly" since it needs to be included in the

tensorflow/python/kernel_tests/BUILD

@@ -2663,6 +2663,9 @@ cuda_py_test(
         "//tensorflow/python:variables",
         "//tensorflow/python/eager:context",
     ],
+    tags = [
+        "no_oss",
+    ],
     shard_count = 10,
 )
 

tensorflow/python/kernel_tests/distributions/BUILD

@@ -217,7 +217,10 @@ cuda_py_test(
         "//tensorflow/python:nn_ops",
         "//tensorflow/python:platform_test",
     ],
-    tags = ["nomsan"],  # disable to avoid false positives from scipy.
+    tags = [
+        "nomsan",  # disable to avoid false positives from scipy.
+        "no_oss",
+    ],
 )
 
 cuda_py_test(