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>

inc/ocf_err.h

@@ -117,8 +117,11 @@ typedef enum {
 	/** Invalid cache line size */
 	OCF_ERR_INVALID_CACHE_LINE_SIZE,
 
-	/** Invalid cache name loaded*/
+	/** Invalid cache name loaded */
 	OCF_ERR_CACHE_NAME_MISMATCH,
+
+	/** Device does not meet requirements */
+	OCF_ERR_INVAL_CACHE_DEV,
 } ocf_error_t;
 
 #endif /* __OCF_ERR_H__ */