Migrate connector.backend to new API
Migrate connector.backend to new API

mohamedhagag/connector,Endika/connector,js-landoo/connector,acsone/connector,zhaohuaw/connector,hugosantosred/connector,fevxie/connector,BT-ojossen/connector,sylvain-garancher/connector,esousy/connector,open-synergy/connector,brain-tec/connector,BT-jmichaud/connector,maljac/connector,BT-fgarbely/connector,anybox/connector,MindAndGo/connector,gurneyalex/connector,BT-fgarbely/connector,zhaohuaw/connector,maljac/connector,Antiun/connector,BT-ojossen/connector,js-landoo/connector,dvitme/connector,fevxie/connector,brain-tec/connector,brain-tec/connector,esousy/connector,hugosantosred/connector,mohamedhagag/connector,Endika/connector,acsone/connector,anybox/connector,BT-jmichaud/connector,acsone/connector,open-synergy/connector,gurneyalex/connector,sylvain-garancher/connector,Antiun/connector,MindAndGo/connector,dvitme/connector