Evpn Junit Testcases

Evpn Junit Testcases

1. Port is created in DPN1 before EVPN attach and check for RT2
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2. Port is created in DPN1 after EVPN attach and check for RT2
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3. Port is deleted in DPN1 check for RT2 withdrawal(if EVPN is attached).
4. Detach EVPN and check for RT2 withdrawal.
5. Add MacVrfEntry before EVPN attach and check for DMAC flor install for
RT2 received route.
6. Add MacVrfEntry after EVPN attach and check for DMAC flor install for
RT2 received route.
7. Withdraw RT2 route received, check for uninstalling the DMAC flow.

Additionally test helper files added.
Light weight implementation of some other module like bgpmanager,
vpnmanager is done and they are binded.

Change-Id: Ie0ec83dcec97a48d7f7c5f21c4865a6d98a3ceed
Signed-off-by: Riyazahmed D Talikoti <riyazahmed.d.talikoti@ericsson.com>