Fix swarm slave registration

docker -H tcp://swarm-qa.nuxeo.org:4000 run --restart always --privileged -itd \
-e JENKINS_USERNAME=nuxeojenkins -e JENKINS_API_TOKEN=XXXXXX \
-l swarm -l SLAVE1010 -l DYNAMIC --name swarm-pub-1010-0 -e JENKINS_NAME=swarm-pub-1010-0 \
-e JENKINS_LABELS='swarm SLAVE1010 DYNAMIC ondemand1010 ondemandcheck1010' \
-e JENKINS_MASTER=https://qa2.nuxeo.org/jenkins \
-w /opt/jenkins -v /var/run/docker.sock:/var/run/docker.sock:rw -v /opt/jenkins/workspace:/opt/jenkins/workspace:rw \
    dockerpriv.nuxeo.com:443/nuxeo/jenkins-slave-10.10-swarm:latest

PASUP-tocard:~ ffischer$ docker -H tcp://swarm-qa.nuxeo.org:4000 ps -f name=1010
CONTAINER ID        IMAGE                                                             COMMAND             CREATED             STATUS              PORTS                         NAMES
ce9b6ee47047        dockerpriv.nuxeo.com:443/nuxeo/jenkins-slave-10.10-swarm:latest   "/sbin/my_init"     19 minutes ago      Up 19 minutes       22/tcp                        qa-ovh03/swarm-pub-1010-0
a51bf3f2f59b        dockerpriv.nuxeo.com:443/nuxeo/jenkins-slavepriv-10.10            "/sbin/my_init"     16 hours ago        Up 15 hours         51.254.197.210:5801->22/tcp   qa-ovh02.nuxeo.com/slavepriv2-1010-1
07f0cb0f9d4d        dockerpriv.nuxeo.com:443/nuxeo/jenkins-it-10.10                   "/sbin/my_init"     16 hours ago        Up 15 hours         51.254.197.210:2305->22/tcp   qa-ovh02.nuxeo.com/itslave1010
5a5316f9e063        dockerpriv.nuxeo.com:443/nuxeo/jenkins-slave-10.10                "/sbin/my_init"     16 hours ago        Up 15 hours         51.254.197.210:2204->22/tcp   qa-ovh02.nuxeo.com/static1010

docker -H tcp://swarm-qa.nuxeo.org:4000 exec -it ce9b6ee47047 bash
PASUP-tocard:~ ffischer$ docker -H tcp://swarm-qa.nuxeo.org:4000 exec -it ce9b6ee47047 bash
root@ce9b6ee47047:/opt/jenkins# sudo su - jenkins
jenkins@ce9b6ee47047:~$ cd swarm-client/
jenkins@ce9b6ee47047:~/swarm-client$ tail swarm-0.log.0 
SEVERE: Failed to fetch slave info from Jenkins, HTTP response code: 401
Jan 23, 2019 10:15:20 AM hudson.plugins.swarm.Client run
SEVERE: RetryException occurred
hudson.plugins.swarm.RetryException: Failed to fetch slave info from Jenkins, HTTP response code: 401
	at hudson.plugins.swarm.SwarmClient.discoverFromMasterUrl(SwarmClient.java:223)
	at hudson.plugins.swarm.Client.run(Client.java:141)
	at hudson.plugins.swarm.Client.main(Client.java:114)

Jan 23, 2019 10:15:20 AM hudson.plugins.swarm.Client run
SEVERE: Retry limit reached, exiting...