Update the snoop script to also include the arguments to make the output
more useful.
```
$ sudo hack/podmansnoop
PCOMM PID PPID AGE(ms) ARGV
conmon 14964 14952 1.01 /usr/bin/conmon --version
podman 14952 14139 26.07 /usr/bin/podman ps
```
Signed-off-by: Valentin Rothberg <vrothberg@redhat.com>
Add a script to measure the execution times of podman, crun, run and
conmon. It's a trimmed down version of the exitsnoop tool and intended
to guide us in future performance optimizations.
The below output was generated when running
`podman run --net=host docker.io/library/alpine:latest true`
```
podman (snoop) $ sudo ./hack/podmansnoop
PCOMM PID PPID TID AGE(ms)
conmon 51580 51569 51580 1.67
conmon 51583 51569 51583 3.53
crun 51591 51590 51591 18.28
crun 51593 51569 51593 2.48
conmon 51606 51594 51606 0.85
crun 51608 51594 51608 2.50
podman 51594 51590 51594 176.27
conmon 51590 1950 51590 214.78
podman 51569 40964 51569 431.36
```
In the future, it would be helpful to add the arguments of the commands.
`execsnoop` can reveal them quite nicely but I did not manage to merge
the two scripts due to time constraints.
Signed-off-by: Valentin Rothberg <vrothberg@redhat.com>
