[PFCWD CLI] Configuring to 'stop' all ports command is not aligned

[shlomibitton]

Description

Currently to configure PFCWD with same parameters on all ports we use for example:
config pfcwd start --action drop --restoration-time 400 ports all detection-time 400
To stop we use:
config pfcwd stop
Stopping a specific port:
config pfcwd stop ports Ethernet0
A clear and aligned CLI command to stop all ports should be similar to "start" operation like:
config pfcwd stop ports all