Fixes linter warnings.

pluginmgr/research/plugins.go

plugins/analysis/client/parameters.go

plugins/analysis/client/plugin.go

plugins/analysis/client/types.go

plugins/analysis/plugin.go

plugins/analysis/server/constants.go

plugins/analysis/server/events.go

plugins/analysis/server/parameters.go

plugins/analysis/server/plugin.go

plugins/analysis/server/types.go

plugins/analysis/types/heartbeat/constants.go

plugins/analysis/types/heartbeat/packet.go

plugins/analysis/types/ping/constants.go

plugins/analysis/types/ping/packet.go

plugins/analysis/webinterface/httpserver/parameters.go

plugins/analysis/webinterface/httpserver/plugin.go

...ins/analysis/webinterface/httpserver/websocket_channel.go

plugins/analysis/webinterface/plugin.go

...s/analysis/webinterface/recordedevents/recorded_events.go

plugins/analysis/webinterface/types/types.go