Added request to install flows by switch

[Alopalao]

Closes #202

Summary

This is a draft, implementation may change

• Implemented new methods to install flows by specific switches. These methods are slightly modified to fit with the content of the request.
• There is room for improvement in the controller side

Local Tests

Tried with these request:

{
    "00:00:00:00:00:00:00:03": {
        "flows": [{"match": {"in_port": 3, "dl_vlan": 1}, "cookie": 12297829382473034410, "actions": [{"action_type": "set_vlan", "vlan_id": 1}, {"action_type": "output", "port": 2}], "owner": "mef_eline", "table_group": "evpl", "table_id": 0, "priority": 20000}, {"match": {"in_port": 2, "dl_vlan": 1}, "cookie": 12297829382473034410, "actions": [{"action_type": "set_vlan", "vlan_id": 1}, {"action_type": "output", "port": 3}], "owner": "mef_eline", "table_group": "evpl", "table_id": 0, "priority": 20000}],
        "force": true
    },
    "00:00:00:00:00:00:00:02": {
        "flows": [{"match": {"in_port": 3, "dl_vlan": 1}, "cookie": 12297829382473034410, "actions": [{"action_type": "set_vlan", "vlan_id": 1}, {"action_type": "output", "port": 2}], "owner": "mef_eline", "table_group": "evpl", "table_id": 0, "priority": 20000}, {"match": {"in_port": 2, "dl_vlan": 1}, "cookie": 12297829382473034410, "actions": [{"action_type": "set_vlan", "vlan_id": 1}, {"action_type": "output", "port": 3}], "owner": "mef_eline", "table_group": "evpl", "table_id": 0, "priority": 20000}],
        "force": true
    },
    "00:00:00:00:00:00:00:04": {
        "flows": [{"match": {"in_port": 1, "dl_vlan": 123}, "cookie": 12297829382473034410, "actions": [{"action_type": "push_vlan", "tag_type": "s"}, {"action_type": "set_vlan", "vlan_id": 1}, {"action_type": "output", "port": 2}], "owner": "mef_eline", "table_group": "evpl", "table_id": 0, "priority": 20000}, {"match": {"in_port": 2, "dl_vlan": 1}, "cookie": 12297829382473034410, "actions": [{"action_type": "pop_vlan"}, {"action_type": "output", "port": 1}], "owner": "mef_eline", "table_group": "evpl", "table_id": 0, "priority": 20000}],
        "force": true
    },
    "00:00:00:00:00:00:00:01": {
        "flows": [{"match": {"in_port": 1, "dl_vlan": 123}, "cookie": 12297829382473034410, "actions": [{"action_type": "push_vlan", "tag_type": "s"}, {"action_type": "set_vlan", "vlan_id": 1}, {"action_type": "output", "port": 3}], "owner": "mef_eline", "table_group": "evpl", "table_id": 0, "priority": 20000}, {"match": {"in_port": 3, "dl_vlan": 1}, "cookie": 12297829382473034410, "actions": [{"action_type": "pop_vlan"}, {"action_type": "output", "port": 1}], "owner": "mef_eline", "table_group": "evpl", "table_id": 0, "priority": 20000}],
        "force": true
    }
}

End-to-End Tests

TBA

[Alopalao]

Creating another PR covering this.