testing/bazel: disable stripping
bazel version fails with error.
file is invalid or corrupted (missing end of central directory record) Opening zip "/proc/self/exe": Cannot find central directory FATAL: Failed to open '/proc/self/exe' as a zip file: (error: 5): I/O error
A suggested fix was to disable stripping. https://github.com/bazelbuild/bazel/issues/600 Other distros also do this so let's try.