add opencv in the host section

2 jobs for openpose in 73 minutes and 38 seconds (queued for 3 seconds)
Name Stage Failure
failed
build_linux Build
(12:36:38.582) export CURL_CA_BUNDLE=/local/builds/bob/bob.conda/_ci/cacert.pem
(12:36:38.584)
export SSL_CERT_FILE=/local/builds/bob/bob.conda/_ci/cacert.pem
(12:36:38.585)
export GIT_SSL_CAINFO=/local/builds/bob/bob.conda/_ci/cacert.pem
(12:36:38.586)
export DOC_SERVER_PREFIX=public-upload/docs/bob/bob.conda
(12:36:38.587)
DOC_UPLOADS=public-upload/docs/bob/bob.conda/openpose/
(12:36:38.588)
export LANG=en_US.UTF-8
(12:36:38.589)
export LC_ALL=en_US.UTF-8
(12:36:38.590)
export MATPLOTLIBRC=/local/builds/bob/bob.conda/_ci
ERROR: Job failed: exit code 1