prow/config: don't log every file watched
prow/config: don't log every file watched

Nobody needs to see 10,000 files in a long list :)

Signed-off-by: Steve Kuznetsov <a7da0fca91d9933d2725d731a48cabdc9e8ffd7a@redhat.com>

cblecker/test-infra,kubernetes/test-infra,cjwagner/test-infra,kubernetes/test-infra,cblecker/test-infra,fejta/test-infra,dims/test-infra,michelle192837/test-infra,cblecker/test-infra,BenTheElder/test-infra,jessfraz/test-infra,BenTheElder/test-infra,fejta/test-infra,monopole/test-infra,monopole/test-infra,michelle192837/test-infra,BenTheElder/test-infra,kubernetes/test-infra,BenTheElder/test-infra,dims/test-infra,monopole/test-infra,cjwagner/test-infra,cjwagner/test-infra,dims/test-infra,michelle192837/test-infra,BenTheElder/test-infra,michelle192837/test-infra,michelle192837/test-infra,dims/test-infra,BenTheElder/test-infra,kubernetes/test-infra,fejta/test-infra,cblecker/test-infra,cjwagner/test-infra,monopole/test-infra,kubernetes/test-infra,kubernetes/test-infra,jessfraz/test-infra,jessfraz/test-infra,jessfraz/test-infra,cjwagner/test-infra,dims/test-infra,fejta/test-infra,monopole/test-infra,fejta/test-infra,fejta/test-infra,michelle192837/test-infra,jessfraz/test-infra,jessfraz/test-infra,monopole/test-infra,dims/test-infra,cblecker/test-infra,cjwagner/test-infra,cblecker/test-infra