concurrent deployments fail

[bastelfreak]

Hi!,
while testing the application, I pushed a testbranch in two modules at once. all modules in the Puppetfile are deployed via ssh/git clones. r10k fails while another r10k process is running. I think we should set the concurrency in sidekiq to 1:

journalctl output from puppet-webhook-sidekiq:

Sep 11 10:28:34 puppetserver01 bundle[21618]: Stderr: 
Sep 11 10:28:34 puppetserver01 bundle[21618]: fatal: Unable to create '/etc/puppetlabs/code/environments/SACP_305_order_process/modules/base/.git/index.lock': File exists. 
Sep 11 10:28:34 puppetserver01 bundle[21618]: If no other git process is currently running, this probably means a 
Sep 11 10:28:34 puppetserver01 bundle[21618]: git process crashed in this repository earlier. Make sure no other git 
Sep 11 10:28:34 puppetserver01 bundle[21618]: process is running and remove the file manually to continue. 
Sep 11 10:28:34 puppetserver01 bundle[21618]: Exit code: 128