The Congress is likely to get four ministerial berths in the new government in Bihar as JD(U) leader Nitish Kumar snapped ties with the BJP and joined hands with the RJD-led alliance, sources said on Tuesday. Sources said Kumar spoke to both Congress president Sonia Gandhi and Rahul Gandhi soon after resigning from his post of chief minister. He is also learnt to have thanked the Congress leadership for extending support in the formation of…