Adding self to various maintainers files.

Obviously will need to wait to be merged til Solomon is back.

Docker-DCO-1.1-Signed-off-by: Jessica Frazelle <jess@docker.com> (github: jfrazelle)
I thought the pattern was to add a maintainer after there was a need or an individual has contributed significant review or patches. There isn't much changing in this directory and I haven't seen Jessie make any changes so I don't know if we need additional help right now. I am happy to LGTM Jessie as a maintainer once that happens.