[HAWQ-1516] add hawq start "userinput.ask_yesno"

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Not A Bug
• Fix Version/s: backlog
• Component/s: Command Line Tools
• Assignee: Radar Da Lei
• Reporter: wangbincmss
• Created: 11/Aug/17 02:22
• Updated: 04/Sep/17 07:07
• Resolved: 04/Sep/17 07:07

Description

both hawq init and hawq stop have "ask_yesno" , hawq start not have "ask_yesno"
"ask_yesno" will make users think twice for whether there is an alive cluster and whether to proceed, I think hawq start should have "ask_yesno" like hawq init and hawq stop