Return golint-compliant naming for mappings
Return golint-compliant naming for mappings

It was lost in pull request about runtime config

Signed-off-by: Alexander Morozov <4efb7da3e38416208b41d8021a942884d8a9435c@docker.com>

cloudfoundry-incubator/specs,ujuc/specs,runcom/specs,jonboulle/specs,zenlinTechnofreak/specs,wking/opencontainer-specs,talwai/specs,vbatts/specs,marcosnils/specs,vishh/specs,hqhq/runtime-spec,opencontainers/runtime-spec,gao-feng/specs,HardikDR/specs,opencontainers/specs,wangkirin/specs,ChengTiesheng/specs,wking/opencontainer-runtime-spec,hqhq/specs,laijs/specs,mheon/specs