OPNSense/core 0c3e079src/sbin pluginctl opnsense-importer

sbin: usage print tweaks

(cherry picked from commit c83daaa54b5e0873c28fbf4cae706f1b55f59538)
DeltaFile
+2-3src/sbin/pluginctl
+1-1src/sbin/opnsense-importer
+1-1src/sbin/opnsense-shell
+1-1src/sbin/opnsense-version
+5-64 files

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