Track chip-seq usage

/*
 * trackStart: track start of pipeline
 */

process trackStart {
  script:
  """
  hostname
  ulimit -a
  export https_proxy=\${http_proxy}

  curl -H 'Content-Type: application/json' -X PUT -d '{ \
      "sessionId": "${workflow.sessionId}", \
      "pipeline": "atacseq_analysis", \
      "start": "${workflow.start}", \
      "astrocyte": ${params.astrocyte}, \
      "status": "started", \
      "nextflowVersion": "${workflow.nextflow.version}", \
      "pipelineVersion": "2.0.0", \
      "ci": ${params.ci}, \
      "dev": ${params.dev}}' \
  "https://xku43pcwnf.execute-api.us-east-1.amazonaws.com/ProdDeploy/pipeline-tracking"
  """
}