tcpdump not working on Mariner

[Y-Sindo]

root [ ~ ]# ./kdebug -t tcpdump
INFO[0000] Exec tcpdump [-nvvv ]
FATA[0000] exec: "tcpdump": executable file not found in $PATH

[ArchangelSDY]

Improve error message and provide install guidance.

tdnf install -y tcpdump
tdnf search xxx