dreport: Add audit.log Data to Dump

Add all /var/log/audit/audit.log files to BMC dumps. This
file contains a log of the events that occurred and who initiated
them.

Tested:
```
BMCDUMP$ ls -la audit-log.log
-rw-r--r-- 1 xxxx xxxx 3993 Sep 19 10:59 audit-log.log

$ tar -tvf $DUMPFILE | grep audit

drwx------ root/root 0 2023-03-22 14:07 BMCDUMP.SIMP10R.00000000.20230322190714/audit/

-rw------- root/root   1729455 2023-03-22 14:07 BMCDUMP.SIMP10R.00000000.20230322190714/audit/audit.log

-r-------- root/root   2097279 2023-03-22 14:07 BMCDUMP.SIMP10R.00000000.20230322190714/audit/audit.log.3

-r-------- root/root   2097160 2023-03-22 14:07 BMCDUMP.SIMP10R.00000000.20230322190714/audit/audit.log.2

-r-------- root/root   2097227 2023-03-22 14:07 BMCDUMP.SIMP10R.00000000.20230322190714/audit/audit.log.1
```

Change-Id: I8e36edeca9ad40f8ddc02becf3a9246e0989d72a
Signed-off-by: Janet Adkins <janeta@us.ibm.com>
Signed-off-by: Gopichand Paturi <gopichandpaturi@gmail.com>