Bengaluru: With the State Assembly polls a year away, top JD(S) leader and former Chief Minister H.D. Kumaraswamy said that a ‘Kannadigara Mahamytrikoota’ involving all Kannada groups, farmer leaders and Dalit activists, will be formed to take on the national parties (Congress and BJP) in the Assembly polls. Speaking to presspersons here yesterday, Kumaraswamy said…