dreport: add settings data to BMC dump

Test case1 - busctl success
Wed Apr 27 02:23:56 UTC 2022 INFO: Collected settings
sh-5.1# ls -lah settings.log
-rw-r--r-- 1 root root 46.3K Apr 27

dreport: add settings data to BMC dump

Test case1 - busctl success
Wed Apr 27 02:23:56 UTC 2022 INFO: Collected settings
sh-5.1# ls -lah settings.log
-rw-r--r-- 1 root root 46.3K Apr 27 02:23 settings.log
sh-5.1#

Test case2 - busctl failure
Wed Apr 27 04:59:11 UTC 2022 ERROR: Failed to collect settings
Wed Apr 27 04:59:11 UTC 2022 INFO: Copied settings
/var/lib/phosphor-settings-manager/settings
sh-5.1# du -sh settings
16.0K settings

Signed-off-by: Marri Devender Rao <devenrao@in.ibm.com>
Change-Id: I2448a3108e0c6c1e6aa1eca49ebf6c76ed4664d9

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