escape xml
log request parameters
substitute MockQaService with DefaultQaService
change kernelDocBasePattern; add url related default values
add PhoenixAgentDryRun logger
change default phoenix_kernel_war_tmp dir
change .ssh/config and .ssh/known_hosts file mode to 600
add sudo when calling op script
add more logging
change default value according to product env
add PhoenixAgentDryRun to check whether new agent is valid to upgrade