pd-ctl: try to fix interactive mode (#3782)
pd-ctl: try to fix interactive mode (#3782)

* pd-ctl: fix interactive mode

Signed-off-by: xhe <xw897002528@gmail.com>

* pd-ctl: remove unnecessary modifications

Signed-off-by: xhe <xw897002528@gmail.com>

* pd-ctl: hidden unnecessary flags

Signed-off-by: xhe <xw897002528@gmail.com>

* pd-ctl: revert exit on error

Signed-off-by: xhe <xw897002528@gmail.com>

* pd-ctl: remove unused

Signed-off-by: xhe <xw897002528@gmail.com>

Co-authored-by: Ti Chi Robot <040e6455cde1c91e876ec337e785ce913eacba35@tidb.io>
pingcap/pd,pingcap/pd