loaded vmods are not correct in grafana.

[thatsk]

• Varnish
  varnish-6.0.2-1.el7.x86_64

• prometheus_varnish_exporter fill_version
  prometheus_varnish_exporter v1.5.1 (dc01100) 01.08.2019 12:55:35

• ** Loaded modules**

root@test: ~/prometheus_varnish_exporter-1.5.1.linux-amd64# ls -la /usr/lib64/varnish/vmods/
total 1124
drwxr-xr-x 2 root root   4096 Oct  3 11:57 .
drwxr-xr-x 3 root root     19 Oct  3 07:32 ..
-rwxr-xr-x 1 root root 111632 Nov  7  2018 libvmod_blob.so
-rwxr-xr-x 1 root root    988 Oct  3 11:57 libvmod_bodyaccess.la
-rwxr-xr-x 1 root root  44160 Oct  3 11:57 libvmod_bodyaccess.so
-rwxr-xr-x 1 root root    964 Oct  3 11:57 libvmod_cookie.la
-rwxr-xr-x 1 root root  46592 Oct  3 11:57 libvmod_cookie.so
-rwxr-xr-x 1 root root 320912 Nov  7  2018 libvmod_directors.so
-rwxr-xr-x 1 root root    964 Oct  3 11:57 libvmod_header.la
-rwxr-xr-x 1 root root  43952 Oct  3 11:57 libvmod_header.so
-rwxr-xr-x 1 root root  31672 Nov  7  2018 libvmod_proxy.so
-rwxr-xr-x 1 root root  15392 Nov  7  2018 libvmod_purge.so
-rwxr-xr-x 1 root root    982 Oct  3 11:57 libvmod_saintmode.la
-rwxr-xr-x 1 root root  61016 Oct  3 11:57 libvmod_saintmode.so
-rwxr-xr-x 1 root root 113784 Nov  7  2018 libvmod_std.so
-rwxr-xr-x 1 root root    946 Oct  3 11:57 libvmod_tcp.la
-rwxr-xr-x 1 root root  32640 Oct  3 11:57 libvmod_tcp.so
-rwxr-xr-x 1 root root  32008 Nov  7  2018 libvmod_unix.so
-rwxr-xr-x 1 root root    946 Oct  3 11:57 libvmod_var.la
-rwxr-xr-x 1 root root  53320 Oct  3 11:57 libvmod_var.so
-rwxr-xr-x 1 root root    988 Oct  3 11:57 libvmod_vsthrottle.la
-rwxr-xr-x 1 root root  52048 Oct  3 11:57 libvmod_vsthrottle.so
-rwxr-xr-x 1 root root  50568 Nov  7  2018 libvmod_vtc.so
-rwxr-xr-x 1 root root    952 Oct  3 11:57 libvmod_xkey.la
-rwxr-xr-x 1 root root  79424 Oct  3 11:57 libvmod_xkey.so
`
But on grafana it always shows 1 vmod.