Move ocf_request from utils

ocf_request has always been first class citizen in OCF,
so lets place it along with another essential objects.

Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>

src/mngt/ocf_mngt_cache.c

@@ -18,7 +18,6 @@
 #include "../utils/utils_cache_line.h"
 #include "../utils/utils_pipeline.h"
 #include "../utils/utils_refcnt.h"
-#include "../ocf_utils.h"
 #include "../concurrency/ocf_concurrency.h"
 #include "../eviction/ops.h"
 #include "../ocf_ctx_priv.h"

src/mngt/ocf_mngt_common.c

@@ -9,7 +9,7 @@
 #include "../ocf_ctx_priv.h"
 #include "../metadata/metadata.h"
 #include "../engine/cache_engine.h"
-#include "../utils/utils_req.h"
+#include "../ocf_request.h"
 #include "../utils/utils_device.h"
 #include "../eviction/ops.h"
 #include "../ocf_logger_priv.h"

src/mngt/ocf_mngt_flush.c

@@ -15,7 +15,7 @@
 #include "../utils/utils_part.h"
 #include "../utils/utils_pipeline.h"
 #include "../utils/utils_refcnt.h"
-#include "../utils/utils_req.h"
+#include "../ocf_request.h"
 #include "../ocf_def_priv.h"
 
 struct ocf_mngt_cache_flush_context;