add sarien support

config.txt

@@ -1,12 +1,13 @@
-user_password=casper
-working_dir=ToT_3
-repo_branch=main
-chrome_board_name=volteer
-chrome_project_name=eldrid
+user_password=default
+working_dir=default
+repo_branch=default
+chrome_board_name=default
+chrome_project_name=default
 is_repo_sync=true
 is_setup_board=true
 is_build_packages=true
-is_build_firmware=false
-is_build_image=false
-is_install_image=false
-dut_ip_addr=192.168.1.2
+is_build_firmware=true
+is_build_image=true
+is_install_image=true
+dut_ip_addr=192.168.1.2
+reposync_thread=4