[Credo][Ycable] improve logging for Server Powered off/Faulty cables (s…

…onic-net#272)

Signed-off-by: vaibhav-dahiya <vdahiya@microsoft.com>

Signed-off-by: vaibhav-dahiya vdahiya@microsoft.com
Cable could be powered off during which the i2c to the NIC MCU would not be able to respond with which side is active.
For such cases the log needs to be improved.
In case the cable is powered correctly but still the cable is not able to get the actve side, that would mean a faulty cable.
Added/improved the appropriate logs

Description
Motivation and Context
How Has This Been Tested?
Improved logs only
Additional Information (Optional)

sonic_y_cable/credo/y_cable_credo.py

@@ -617,7 +617,7 @@ def get_read_side(self):
             self.log_info("Reading from NIC side")
             return YCableBase.TARGET_NIC
         else:
-            self.log_error("Error: unknown status for checking which side regval = {} ".format(result))
+            self.log_error("Error: Credo Y Cable unable to get the read side, Cable not plugged/Faulty Cable register value = {} ".format(result))
 
         return YCableBase.TARGET_UNKNOWN
 
@@ -675,7 +675,7 @@ def get_mux_direction(self):
             self.log_info("mux pointing to TOR B")
             return YCableBase.TARGET_TOR_B
 
-        self.log_error("Error: unknown status for mux direction regval = {} ".format(result))
+        self.log_error("Error: Credo Y Cable unable to check the status mux direction, cable powered off/Faulty Cable register value = {}".format(result))
         return YCableBase.TARGET_UNKNOWN
 
     def get_active_linked_tor_side(self):
@@ -736,7 +736,7 @@ def get_active_linked_tor_side(self):
             self.log_info("Nothing linked for routing")
             return YCableBase.TARGET_NIC
 
-        self.log_error("Error: unknown status for active TOR regval = {} ".format(result))
+        self.log_error("Error: Credo Y Cable unable to get active linked ToR side Cable powered off/Faulty Cable register value = {} ".format(result))
         return YCableBase.TARGET_UNKNOWN
 
     def is_link_active(self, target):