fix throttler

(1) fix throttler to avoid 'None' value errors.
(2) fix carrier to set number of threads correctly.
(3) update default configuration to set number of threads.

1.3.4: Merge pull request #185 from HSF/dev

fix terminating aborted jobs which doesn't finalfailed

1.3.3: Merge pull request #183 from HSF/dev

setup fetch-crl cron

1.3.2: Merge pull request #181 from HSF/dev

clean package dependencies

1.3.1: Merge pull request #179 from HSF/dev

fix the conda build failure

1.3.0: Merge pull request #179 from HSF/dev

(1) clean logging
(2) fix duplication in abort tasks
(3) fix receiver to be able to recover from a failure
(4) refactor domapandawork to create a structure to support eventservice
(4) clustering jobs and map jobs to eventservice. It includes development on doma tree and event map, add domapandaeswork (a child class of domapandawork), add sub_map_id to manage events, optimize submitter and poller and trigger to be able to manage events
(5) remove unneeded libraries dependencies in idds-client

1.2.17: Merge pull request #176 from HSF/dev

(1) fix the logrotate
(2) install new panda-client-light to fix the issue that panda client cannot parse returns from panda server

fix eventbus

(1) set eventbus manager correctly when it fails (the backup eventbus is used).
(2) be able to pull back the eventbus when it fails

1.2.15: Merge pull request #172 from HSF/dev

(1) add log rotation and disable syslog-ng
(2) fix conductor when it's in worker mode

1.2.14: Merge pull request #170 from HSF/dev

fix alembic errors