* Change the CAK key length check in config plugin, macsec test profile changes
* Fix the format in add_profile api
The changes needed in various macsec unit tests and config plugin when we move to accept the type 7 encoded key format for macsec. This goes along with PR : sonic-net/sonic-swss#2892 raised earlier.
This PR is to add the following
Add a new options "--profile" to the show macsec command, to show all profiles in device
Update the currentl show macsec command, to show profile in each interface o/p. This will tell which macsec profile the interface is attached to.