Changes:
* Fix OpenBSD cpu.sh output to match others
* Fix OpenBSD df.sh output (no need for %% here)
* Do not use sudo or doas when running as root
* Use #!/usr/bin/env bash to support OpenBSD in run_nix_ta_commands
* Fix rsyslog example to trim whitespace in run_nix_ta_commands
* Add /usr/local/sbin:/usr/local/bin to PATH in run_nix_ta_commands
* Fix getting hour and minute for OpenBSD in run_nix_ta_commands
"08" shows up to printf as octal
* Support difference in OpenBSD logger command:
Requires modifying /etc/syslog.conf and setting facility in /etc/nix_ta.conf
* Add docker.sh and docker_metric.sh for collecting docker events/metrics
* Add helper script to extra/ to run the TA commands on systems without
a Splunk forwarder. The commands can be sent to a syslog server.
This script is useful for systems with small or read-only filesystems that
cannot support a Universal Forwarder.
* Add syslog_inputs_nix_ta app to extra/ for ingesting the data from syslog
