elog-gen.py: handle absence of metadata

An error may just want to inherit metadata from another error, without
adding metadata of it's own. In such a case, the metadata file won't
have the "meta" keyword, although it will have the "inherits" keyword.

Accept metadata files that don't have the "meta" keyword.

Change-Id: I4e30e035f19d6af8e0e1f654465d109fe5284a1b
Signed-off-by: Deepak Kodihalli <dkodihal@in.ibm.com>
3 files changed