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>

Author: rical

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