Comment 36 for bug 1588204

Reviewed: https://review.opencontrail.org/21682
Committed: http://github.org/Juniper/contrail-controller/commit/b2786fd4852e21665519d40347666038c931c3a5
Submitter: Zuul
Branch: R3.0.2.x

commit b2786fd4852e21665519d40347666038c931c3a5
Author: Ignatious Johnson Christopher <email address hidden>
Date: Wed Jun 22 07:50:38 2016 +0000

Route targets of the connected logical routers
are not added to routing instances during reinit,
when schema transformer restarts. They are added later
during the Logical Router objects are evaluated.

Fix is to update only the new route targets and remove
all stale route targets after reint.

Closes-Bug: 1588204

Also contrail python packages are cleared from the pip cache
before creation of test virtual enviroiment to make sure
the virtual enviroinment is installed with the newly built
python package.

Change-Id: Iaf7aa002020db7b7de01c32d44c3c74f2215e90f
(cherry picked from commit 0e019b2cc9e09edbe38e5b8b69c5f385ddc13c05)