Set the default value of SMARTSWITCH to false and error handling in sourcing the platform_utils file. (sonic-net#20413)

Set the default value of `SMARTSWITCH` to false and error handling in sourcing the platform_utils file.

Signed-off-by: fountzou <[email protected]>

Author: fountzou

dockers/docker-fpm-frr/base_image_files/TSA

@@ -1,7 +1,9 @@
 #!/bin/bash
 
 # Source the platform_utils script
-source "$(dirname "$0")/platform_utils"
+source "$(dirname "$0")/platform_utils" > /dev/null 2>&1
+
+${SMARTSWITCH:=false}
 
 # Restrict command to sudo users
 if [ "$EUID" -ne 0 ] ; then

dockers/docker-fpm-frr/base_image_files/TSB

@@ -1,7 +1,9 @@
 #!/bin/bash
 
 # Source the platform_utils script
-source "$(dirname "$0")/platform_utils"
+source "$(dirname "$0")/platform_utils" > /dev/null 2>&1
+
+${SMARTSWITCH:=false}
 
 # Restrict command to sudo users
 if [ "$EUID" -ne 0 ] ; then

dockers/docker-fpm-frr/base_image_files/TSC

@@ -1,7 +1,9 @@
 #!/bin/bash
 
 # Source the platform_utils script
-source "$(dirname "$0")/platform_utils"
+source "$(dirname "$0")/platform_utils" > /dev/null 2>&1
+
+${SMARTSWITCH:=false}
 
 # Restrict command to sudo users
 if [ "$EUID" -ne 0 ] ; then