hostapd_cli: Open a new hostapd connection on ping failure when using -a

hostapd_cli: Open a new hostapd connection on ping failure when using -a

When hostapd_cli is started with the -a option, the process enters an
eloop. Every ping interval (five seconds) hostapd_cli sends a PING to
hostapd and waits to receive a response. In a particular issue scenario,
the hostapd_cli control interface socket file in /tmp/wpa_ctrl_xx gets
deleted due to which hostapd is no longer able respond to the PING.
hostapd_cli times out waiting for the socket to become ready for read
and terminates from eloop causing the hostapd_cli process to exit.

hostapd_cli in interactive mode handles a PING response failure by
closing the current connection and opening a new connection using
hostapd_cli_reconnect(). Adopt the same approach for the action file
case instead of terminating the process.

Signed-off-by: Sai Pratyusha Magam <smagam@qti.qualcomm.com>