Fix issue #123: installation failure on CentOS 6

[arifhn]

Description

• Fix installation failure on CentOS 6 because the daemon not started in background
• Fix bash syntax error on line 87

Issues Resolved

https://github.com/chef-cookbooks/push-jobs/issues/123

Check List

• [ ] All tests pass. See https://github.com/chef-cookbooks/community_cookbook_documentation/blob/master/TESTING.MD
• [ ] New functionality includes testing.
• [ ] New functionality has been documented in the README if applicable
• [ ] All commits have been signed for the Developer Certificate of Origin. See https://github.com/chef-cookbooks/community_cookbook_documentation/blob/master/CONTRIBUTING.MD

[kotashiratsuka]

+1

[tas50]

@arifhn If you can sign off this commit for the DCO I'd gladly merge / ship it

[arifhn]

@tas50 I just sign off the commit. Thank you

[tas50]

Cool. Thanks for putting together this fix