Update the quick-start and CLI reference sections to reflect
per-relay cached images (localchat-test0, localchat-test1),
parallel deploy, DNS readiness checks, and revised memory
limits (256 MiB for DNS container). Add mention of section
timing summary printed at the end of lxc-test.
Add cmdeploy "lxc-test" command to run cmdeploy against local containers,
with supplementary lxc-start, lxc-stop and lxc-status subcommands.
See doc/source/lxc.rst for full documentation including prerequisites,
DNS setup, TLS handling, DNS-free testing, and known limitations.
Apart from adding lxc-specific docs, tests, and implementation files in the cmdeploy/lxc directory,
this PR adds the --ssh-config option to cmdeploy run/dns/status/test commands and pyinfra invocations,
and also to sshexec (Execnet) handling. This allows for the host to need no DNS entries for a relay,
and route all resolution through ssh-config. This is used by the "lxc-test" command, which performs
a completely local setup -- again, see docs for more details.
While working on DNS/SSH things i also unified all zone-file handling
to use actual BIND format as it is easy enough to parse back.
