[bgp]: Add sudo check for TSA/B/C command execution (#15288)

TSA/B/C scripts invoke commands that require root permissions. If the user does not have sudo permissions, the scripts today execute until the command and throw a backtrace with error at the specific command. Added a check to ensure the operations check for root permissions upfront.

dockers/docker-fpm-frr/base_image_files/TSA

@@ -1,7 +1,13 @@
 #!/bin/bash
 
+# Restrict command to sudo users
+if [ "$EUID" -ne 0 ] ; then
+  echo "Root priveleges are needed for this operation"
+  exit 1
+fi
+
 if [ -f /etc/sonic/chassisdb.conf ]; then
-  rexec all -c "TSA chassis"
+  rexec all -c "sudo TSA chassis"
   echo "Please execute \"rexec all -c 'sudo config save -y'\" to preserve System mode in Maintenance after reboot\
   or config reload on all linecards"
   exit 0

dockers/docker-fpm-frr/base_image_files/TSB

@@ -1,8 +1,14 @@
 #!/bin/bash
 
+# Restrict command to sudo users
+if [ "$EUID" -ne 0 ] ; then
+  echo "Root priveleges are needed for this operation"
+  exit 1
+fi
+
 # If run on supervisor of chassis, trigger remote execution of TSB on all linecards
 if [ -f /etc/sonic/chassisdb.conf ]; then
-  rexec all -c "TSB chassis"
+  rexec all -c "sudo TSB chassis"
   echo "Please execute \"rexec all -c 'sudo config save -y'\" to preserve System mode in Normal state after reboot\
  or config reload on all linecards"
   exit 0

dockers/docker-fpm-frr/base_image_files/TSC

@@ -1,10 +1,16 @@
 #!/bin/bash
 
+# Restrict command to sudo users
+if [ "$EUID" -ne 0 ] ; then
+  echo "Root priveleges are needed for this operation"
+  exit 1
+fi
+
 if [ -f /etc/sonic/chassisdb.conf ]; then
   if [[ $1 == "no-stats" ]]; then
-    rexec all -c "TSC no-stats"
+    rexec all -c "sudo TSC no-stats"
   else
-    rexec all -c "TSC"
+    rexec all -c "sudo TSC"
   fi
   exit 0
 fi