Add $SEED_IP back into $no_proxy

This was recently removed but is still needed as we use $SEED_IP inside
devtest_seed.sh to communicate with keystone. The commit that removed this
I430a7213da319b17aae12d34374a7967c43d2cbd also took other steps to cleanup
$SEED_IP these should remain in place.

Change-Id: I98cf6227a8547d919708f2a94f65227fe7df8b97
Merge "Add $SEED_IP back into $no_proxy"