Changes needed in lftools for github orgs

Changes needed in lftools for github orgs

Part of the effort for self serve user management

check-votes now works against a a githubpr
Note: You can't vote on your own pr so I add the pr owner as
a voter automatically.

infofile match-ldap-to-info now works against github groups

github submit-pr will submit a pr if mergable

github votes will count votes on a pr

Fixes a bug in github team invitation.
Teams needs to be array of :class:`github.Team.Team`

adds: --add_team and --remove_team to  github update-repo
so that the replication user can be added to each new repo
in an automated way

ISSUE: RELENG-1864
Signed-off-by: Aric Gardner <agardner@linuxfoundation.org>
Change-Id: I65d30dab1d1638123fdb46bc705ec6190cb3182a