Rename platfrom tests to keep run ordering

Node plagin run tests in adc order,
as result platfrom tests runs before smoke, that is wrong

So  platfrom_test to tests_platfrom
to get smoke tests executedbefore platform

Closes-Bug: #1465238
Change-Id: I91774614afb7edc0ecec3f5b592b75db224ac543

fuel_health/tests/tests_platform/__init__.py

@@ -22,9 +22,9 @@ in test_sets table.
 """
 __profile__ = {
     "test_runs_ordering_priority": 4,
-    "id": "platform_tests",
+    "id": "tests_platform",
     "driver": "nose",
-    "test_path": "fuel_health/tests/platform_tests",
+    "test_path": "fuel_health/tests/tests_platform",
     "description": ("Platform services functional tests."
                     " Duration 3 min - 60 min"),
     "cleanup_path": "fuel_health.cleanup",