Prune archive journal log

There is a case seen on system where the journal had filled up
the /run/ filesystem. Apparently we don’t prune that yet in code
for cleanup.

Command Example : "journalctl —vacuum-size=1M"
Defaulted to 1 Meg in the utils.robot.

Resolves openbmc/openbmc-test-automation#231

Change-Id: I93fa162a77b24ce06926ee3ddf485520a90e5e11
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
1 file changed