[kafka_consumer] address metadata readiness race condition.
[kafka_consumer] address metadata readiness race condition.

[kafka_consumer] typos breaking offset collection and consumer_group filtering.

varlib1/servermall,s-maj/integrations-core,s-maj/integrations-core,varlib1/servermall,serverdensity/sd-agent-core-plugins,varlib1/servermall,DataDog/integrations-core,s-maj/integrations-core,DataDog/integrations-core,serverdensity/sd-agent-core-plugins,DataDog/integrations-core,DataDog/integrations-core,DataDog/integrations-core,serverdensity/sd-agent-core-plugins,DataDog/integrations-core,DataDog/integrations-core,varlib1/servermall,DataDog/integrations-core,DataDog/integrations-core,serverdensity/sd-agent-core-plugins,s-maj/integrations-core,serverdensity/sd-agent-core-plugins,varlib1/servermall,s-maj/integrations-core,DataDog/integrations-core