Update nextflow version and reports.

.gitlab-ci.yml

 before_script:
   - module add  python/3.6.1-2-anaconda
   - pip install --user pytest-pythonpath pytest-cov
-  - module load nextflow/0.24.1-SNAPSHOT
+  - module load nextflow/0.27.6
   - ln -s /project/shared/bicf_workflow_ref/workflow_testdata/chipseq/*fastq.gz test_data/
 
 stages:

workflow/conf/biohpc.config

@@ -75,3 +75,11 @@ trace {
   file = 'pipeline_trace.txt'
   fields = 'task_id,native_id,process,name,status,exit,submit,start,complete,duration,realtime,%cpu,%mem,rss'
 }
+
+timeline {
+  enabled = true
+}
+
+report {
+  enabled = true
+}