Change NCPA memory/virtual to memory/physical

[gaudxh]

Change NCPA memory/virtual to memory/physical to ensure accurate understanding of the metric.

In NCPA memory/virtual is simple a measure of the RAM free/used, it doesn't include swap.

You can compare it to the output of "free -m":

[root@centos75 tmp]# free -m total used free shared buff/cache available Mem: 1838 168 1053 8 616 1473 Swap: 2047 0 2047

Which shows memory and swap separately, same as the API:

{ "virtual": { "available": [ 1.44, "GiB" ], "total": [ 1.8, "GiB" ], "percent": [ 19.8, "%" ], "free": [ 1.03, "GiB" ], "used": [ 0.2, "GiB" ] } }

[ranjithkodumbu]

When you make changes from virtual to physical in next versions, please also ensure to include current name(virtual), because many of them would have enabled with virtual in some of their automations, this will break if we are going to remove virtual in newer versions. So, my request is when you add physical; retain virtual as well.

[jomann09]

Of course, if we do this we would keep the old endpoints at least until the next major version.