statd: yanger: stop overwriting infix-containers 'command' leaf

The 'command' leaf is config, with a strict pattern that doesn't allow
'&', quotes or pipes.  Yanger was populating it from podman's full,
untruncated container command -- so any container whose entrypoint
uses shell metacharacters (e.g. sh -c "... && ...") failed YANG
validation.

The symptom: every operational read of /infix-containers:containers
returns SR_ERR_INTERNAL, which in turn fails the whole get-data on
the operational datastore.  This breaks case/misc/operational_all and
any RESTCONF/NETCONF read that touches containers.

This was introduced in 59028c4 ("Fix #1466: 'show container' shows no
output"), which added the operational, pattern-less 'cmdline' leaf
but left the old 'command' assignment in place.  Drop it -- 'cmdline'
already carries the full command line, and 'command' belongs to
running config.

Note: the failure can look intermittent across test runs because
podman storage is persistent.  It only triggers once a container with
a bad-pattern command ends up in 'podman ps -a', including stale or
exited leftovers from earlier runs.

Signed-off-by: Richard Alpe <richard@bit42.se>

src/statd/python/yanger/infix_containers.py

@@ -234,10 +234,6 @@ def container(ps):
     if path:
         out["cmdline"] = " ".join([path] + args)
 
-    cmd = inspect.get("Config", {}).get("Cmd", [])
-    if cmd:
-        out["command"] = " ".join(cmd)
-
     net = network(ps, inspect)
     if net:
         out["network"] = net

test/case/statd/containers/infix-containers.json

@@ -9,7 +9,6 @@
         "running": true,
         "status": "Up About a minute",
         "cmdline": "/usr/bin/tini -- /usr/sbin/httpd -f -v",
-        "command": "/usr/sbin/httpd -f -v",
         "network": {
           "interface": [
             {
@@ -30,7 +29,6 @@
         "running": true,
         "status": "Up About a minute",
         "cmdline": "/usr/bin/tini -- /usr/sbin/httpd -f -v -p 91",
-        "command": "/usr/sbin/httpd -f -v -p 91",
         "network": {
           "interface": [
             {
@@ -53,7 +51,6 @@
         "running": true,
         "status": "Up About a minute",
         "cmdline": "/usr/bin/tini -- /usr/sbin/nft-helper /etc/nftables.conf",
-        "command": "/usr/sbin/nft-helper /etc/nftables.conf",
         "network": {
           "host": true
         }

test/case/statd/containers/operational.json

@@ -1188,7 +1188,6 @@
     "container": [
       {
         "cmdline": "/usr/bin/tini -- /usr/sbin/httpd -f -v",
-        "command": "/usr/sbin/httpd -f -v",
         "id": "78d28082c2e5d494c82aa181c95118ce498e25930ad9e288ba010257ca336378",
         "image": "localhost/curios-httpd-oci-amd64-v24.11.0:latest",
         "image-id": "d6930d60a73be9980f8e19b4b4f63586a6d3492178e20bea962e4e9b8c654033",
@@ -1209,7 +1208,6 @@
       },
       {
         "cmdline": "/usr/bin/tini -- /usr/sbin/httpd -f -v -p 91",
-        "command": "/usr/sbin/httpd -f -v -p 91",
         "id": "3451cfceca4eee1091c1dfedece2faee99bc8a729e781799d9c0b4368a31d86d",
         "image": "localhost/curios-httpd-oci-amd64-v24.11.0:latest",
         "image-id": "d6930d60a73be9980f8e19b4b4f63586a6d3492178e20bea962e4e9b8c654033",
@@ -1232,7 +1230,6 @@
       },
       {
         "cmdline": "/usr/bin/tini -- /usr/sbin/nft-helper /etc/nftables.conf",
-        "command": "/usr/sbin/nft-helper /etc/nftables.conf",
         "id": "4e7c3daeba15546e7640014b9ee46e389737ed36583e5cb2f8b75a07a82e8523",
         "image": "localhost/curios-nftables-oci-amd64-v24.11.0:latest",
         "image-id": "7a3cc502436250357a6664100a600f306334b4d7203890b85b7ea9b8da6b5665",