Change error code and add new

Change 'OCF_ERR_START_CACHE_FAIL' to 'OCF_ERR_NO_MEM' while CAS fails in case of memory lack on device.
Add new error code for case, when device doesn't satisfy CAS requirements - 'OCF_ERR_INVAL_CACHE_DEV'.
Use 'OCF_ERR_INVAL_CACHE_DEV' in code.
Update error code match in test.
closes #317 issue

Signed-off-by: Ostrokrzew <slawomir.jankowski@intel.com>

tests/functional/pyocf/types/shared.py

@@ -47,6 +47,7 @@ class OcfErrorCode(IntEnum):
     OCF_ERR_INVALID_CACHE_MODE = auto()
     OCF_ERR_INVALID_CACHE_LINE_SIZE = auto()
     OCF_ERR_CACHE_NAME_MISMATCH = auto()
+    OCF_ERR_INVAL_CACHE_DEV = auto()
 
 
 class OcfCompletion:

tests/functional/tests/management/test_start_stop.py

@@ -359,7 +359,7 @@ def test_start_too_small_device(pyocf_ctx, mode, cls):
 
     cache_device = Volume(Size.from_B(20 * 1024 * 1024 - 1))
 
-    with pytest.raises(OcfError, match="OCF_ERR_START_CACHE_FAIL"):
+    with pytest.raises(OcfError, match="OCF_ERR_INVAL_CACHE_DEV"):
         Cache.start_on_device(cache_device, cache_mode=mode, cache_line_size=cls)