Add README for log collector script
Add README for log collector script

Change-Id: I1412acce6526ce94ce77621b66b8791b2c10aeac
Signed-off-by: George Keishing <bef0a9ecac45fb57611777c8270153994e13fd2e@in.ibm.com>

openbmc/openbmc-test-automation,openbmc/openbmc-test-automation