Gsoc2020 phase3 integration

Contains the work done on deploying CE and HTCondor containers along with their integration to the previous work done for JCentral replica.

Instructions:

• Export $SHARED_VOLUME (eg: export SHARED_VOLUME=/path/doesn't/exist/yet)
• Run /path/to/repo/bin/jared --jar /path/to/jar --volume $SHARED_VOLUME
• Config, logs and certificates can be found in $SHARED_VOLUME, along with docker-compose.yml and env_setup.sh
• Run source .env in $SHARED_VOLUME (not mandatory as long as docker-compose in same directory as .env file)
• Run docker-compose up -d (for background deployment)
• Run source env_setup.sh on host system to allow for alien.py to connect to JCentral-replica Note: must add JCentral-dev and JCentral-dev-SE (ip: 172.17.0.1 or 127.0.0.1) to /etc/hosts on host system if running alien.py from host.

Submission of jobs follows standard procedure.

Things to watch out for:

• Submission of redundant jobs might cause ESV status, make sure to clear the docker-volume after tearing down deployment.
• Avoid remounting cvmfs on host, sometimes removes mount point from the docker containers.
• Make sure to specify @disk=1 in the jdl for output. (make sure not to leave trailing white space after 1, can cause an ESV)