fix: Update principalId placeholder in create_postgres_tables.py and script to replace it correctly

Author: Pavan-Microsoft

scripts/data_scripts/create_postgres_tables.py

@@ -2,7 +2,7 @@
 import psycopg2
 from psycopg2 import sql
 
-principalId = "principalId"
+principalId = "userPrincipalId"
 user = "managedIdentityName"
 host = "serverName"
 dbname = "postgres"

scripts/run_create_table_script.sh

@@ -28,7 +28,7 @@ curl --output "$requirementFile" "$requirementFileUrl"
 echo "Download completed"
 
 # Replace placeholders in the python script with actual values
-sed -i "s/principalId/${principalId}/g" "create_postgres_tables.py"
+sed -i "s/userPrincipalId/${principalId}/g" "create_postgres_tables.py"
 sed -i "s/managedIdentityName/${managedIdentityName}/g" "create_postgres_tables.py"
 sed -i "s/serverName/${serverName}/g" "create_postgres_tables.py"