[fix] better logging of wcce-handler #1832

Job	Run time
container_build (apache2, wsgi)	1m 0s
container_build (apache2, django)	1m 5s
container_build (nginx, wsgi)	1m 0s
container_build (nginx, django)	59s
lego_tests (rsa2048, apache2, wsgi)	52s
lego_tests (rsa2048, apache2, django)	45s
lego_tests (rsa2048, nginx, wsgi)	1m 18s
lego_tests (rsa2048, nginx, django)	47s
lego_tests (rsa4096, apache2, wsgi)	56s
lego_tests (rsa4096, apache2, django)	1m 11s
lego_tests (rsa4096, nginx, wsgi)	1m 2s
lego_tests (rsa4096, nginx, django)	1m 15s
lego_tests (ec256, apache2, wsgi)	1m 5s
lego_tests (ec256, apache2, django)	43s
lego_tests (ec256, nginx, wsgi)	44s
lego_tests (ec256, nginx, django)	50s
cleanup (apache2, wsgi)	3s
cleanup (apache2, django)	2s
cleanup (nginx, wsgi)	2s
cleanup (nginx, django)	2s
	15m 41s

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