Update context from Oslo

Following changes were updated:

13eb01c Adding domain to context and log
12bcdb7 Remove vim header
bdabd51 Remove uuidutils imports in oslo modules
44e8222 Revert "Removes generate_uuid from uuidutils"
571a78a Removes generate_uuid from uuidutils
36859e5 Adding instance_uuid to context and log

Change-Id: I924bfb41fba3a84f01f96777cdfd2db0ea6aabf1
Closes-bug: #1253497
Merge "Update context from Oslo"