tests relying on docker fail on 3n-alt

[vrpolakatcisco]

This seems to be an infra issue, a missing feature after we re-enabled 3n-alt after ubuntu2404 migration. If deemed low priority, we can avoid by removing those tests from jobspecs.
Example failure: [0].

return STDERR docker: Error response from daemon: error while creating mount source path '/usr/bin/vpp': mkdir /usr/bin/vpp: read-only file system

[0] https://logs.fd.io/vex-yul-rot-jenkins-1/csit-vpp-perf-report-iterative-2510-3n-alt/26/log.html.gz#s1-s1-s1-s6-s4-t1-k2-k8-k7-k1-k1

[vrpolakatcisco]

Trending shows the three affected suites were passing till late July 2025.