dreport: add active services (systemd) status to the BMC dump

Generate the status of the active services "systemctl status --all"
and add it to the dump.

Tested:
    State: degraded
     Jobs: 0 queued
   Failed: 3 units
    Since: Wed 2022-03-30 03:17:48 UTC; 7min ago
   CGroup: /
           ├─sys-kernel-debug.mount
           ├─sys-kernel-config.mount

Signed-off-by: Marri Devender Rao <devenrao@in.ibm.com>
Change-Id: I45cef0ccfd4c86711a64bf5dcacb04f89bc5b50d