Clean up the log output when deleting a branch

[rnelson0]

When deleting a branch, access.log shows content like this:

[2017-05-30 13:36:43] DEBUG accept: $IP:54632
[2017-05-30 13:36:43] DEBUG Rack::Handler::WEBrick is invoked.
[2017-05-30 13:36:43] INFO  Authenticated as user puppet from IP $IP
[2017-05-30 13:36:45] ERROR message:
WARN     -> Both /etc/puppetlabs/r10k/r10k.yaml and /etc/r10k.yaml configuration files exist.
WARN     -> /etc/puppetlabs/r10k/r10k.yaml will be used.
ERROR    -> Environment(s) 'test' cannot be found in any source and will not be deployed.
INFO     -> Removing unmanaged path /etc/puppetlabs/puppet/environments/test
 trace: ["/usr/local/bin/webhook:229:in `block in run_command'", "/usr/local/bin/webhook:215:in `open'", "/usr/local/bin/webhook:215:in `run_command'", "/usr/local/bin/webhook:332:in `deploy'", "/usr/local/bin/webhook:173:in `block in <class:Server>'", "/opt/puppetlabs/puppet/lib/ruby/gems/2.1.0/gems/sinatra-1.4.7/lib/sinatra/base.rb:1611:in `call'", "/opt/puppetlabs/puppet/lib/ruby/gems/2.1.0/gems/sinatra-1.4.7/lib/sinatra/base.rb:1611:in `block in compile!'", "/opt/puppetlabs/puppet/lib/ruby/gems/2.1.0/gems/sinatra-1.4.7/lib/sinatra/base.rb:975:in `[]'", "/opt/puppetlabs/puppet/lib/ruby/gems/2.1.0/gems/sinatra-1.4.7/lib/sinatra/base.rb:975:in `block (3 levels) in route!'", "/opt/puppetlabs/puppet/lib/ruby/gems/2.1.0/gems/sinatra-1.4.7/lib/sinatra/base.rb:994:in `route_eval'", "/opt/puppetlabs/puppet/lib/ruby/gems/2.1.0/gems/sinatra-1.4.7/lib/sinatra/base.rb:975:in `block (2 levels) in route!'", "/opt/puppetlabs/puppet/lib/ruby/gems/2.1.0/gems/sinatra-1.4.7/lib/sinatra/base.rb:1015:in `block in process_route'", "/opt/puppetlabs/puppet/lib/ruby/gems/2.1.0/gems/sinatra-1.4.7/lib/sinatra/base.rb:1013:in `catch'", "/opt/puppetlabs/puppet/lib/ruby/gems/2.1.0/gems/sinatra-1.4.7/lib/sinatra/base.rb:1013:in `process_route'", "/opt/puppetlabs/puppet/lib/ruby/gems/2.1.0/gems/sinatra-1.4.7/lib/sinatra/base.rb:973:in `block in route!'", "/opt/puppetlabs/puppet/lib/ruby/gems/2.1.0/gems/sinatra-1.4.7/lib/sinatra/base.rb:972:in `each'", "/opt/puppetlabs/puppet/lib/ruby/gems/2.1.0/gems/sinatra-1.4.7/lib/sinatra/base.rb:972:in `route!'", "/opt/puppetlabs/puppet/lib/ruby/gems/2.1.0/gems/sinatra-1.4.7/lib/sinatra/base.rb:1085:in `block in dispatch!'", "/opt/puppetlabs/puppet/lib/ruby/gems/2.1.0/gems/sinatra-1.4.7/lib/sinatra/base.rb:1067:in `block in invoke'", "/opt/puppetlabs/puppet/lib/ruby/gems/2.1.0/gems/sinatra-1.4.7/lib/sinatra/base.rb:1067:in `catch'", "/opt/puppetlabs/puppet/lib/ruby/gems/2.1.0/gems/sinatra-1.4.7/lib/sinatra/base.rb:1067:in `invoke'", "/opt/puppetlabs/puppet/lib/ruby/gems/2.1.0/gems/sinatra-1.4.7/lib/sinatra/base.rb:1082:in `dispatch!'", "/opt/puppetlabs/puppet/lib/ruby/gems/2.1.0/gems/sinatra-1.4.7/lib/sinatra/base.rb:907:in `block in call!'", "/opt/puppetlabs/puppet/lib/ruby/gems/2.1.0/gems/sinatra-1.4.7/lib/sinatra/base.rb:1067:in `block in invoke'", "/opt/puppetlabs/puppet/lib/ruby/gems/2.1.0/gems/sinatra-1.4.7/lib/sinatra/base.rb:1067:in `catch'", "/opt/puppetlabs/puppet/lib/ruby/gems/2.1.0/gems/sinatra-1.4.7/lib/sinatra/base.rb:1067:in `invoke'", "/opt/puppetlabs/puppet/lib/ruby/gems/2.1.0/gems/sinatra-1.4.7/lib/sinatra/base.rb:907:in `call!'", "/opt/puppetlabs/puppet/lib/ruby/gems/2.1.0/gems/sinatra-1.4.7/lib/sinatra/base.rb:895:in `call'", "/opt/puppetlabs/puppet/lib/ruby/gems/2.1.0/gems/rack-protection-1.5.3/lib/rack/protection/xss_header.rb:18:in `call'", "/opt/puppetlabs/puppet/lib/ruby/gems/2.1.0/gems/rack-protection-1.5.3/lib/rack/protection/path_traversal.rb:16:in `call'", "/opt/puppetlabs/puppet/lib/ruby/gems/2.1.0/gems/rack-protection-1.5.3/lib/rack/protection/json_csrf.rb:18:in `call'", "/opt/puppetlabs/puppet/lib/ruby/gems/2.1.0/gems/rack-protection-1.5.3/lib/rack/protection/base.rb:49:in `call'", "/opt/puppetlabs/puppet/lib/ruby/gems/2.1.0/gems/rack-protection-1.5.3/lib/rack/protection/base.rb:49:in `call'", "/opt/puppetlabs/puppet/lib/ruby/gems/2.1.0/gems/rack-protection-1.5.3/lib/rack/protection/frame_options.rb:31:in `call'", "/opt/puppetlabs/puppet/lib/ruby/gems/2.1.0/gems/rack-1.6.4/lib/rack/nulllogger.rb:9:in `call'", "/opt/puppetlabs/puppet/lib/ruby/gems/2.1.0/gems/rack-1.6.4/lib/rack/head.rb:13:in `call'", "/opt/puppetlabs/puppet/lib/ruby/gems/2.1.0/gems/sinatra-1.4.7/lib/sinatra/show_exceptions.rb:25:in `call'", "/opt/puppetlabs/puppet/lib/ruby/gems/2.1.0/gems/sinatra-1.4.7/lib/sinatra/base.rb:182:in `call'", "/opt/puppetlabs/puppet/lib/ruby/gems/2.1.0/gems/sinatra-1.4.7/lib/sinatra/base.rb:2013:in `call'", "/opt/puppetlabs/puppet/lib/ruby/gems/2.1.0/gems/sinatra-1.4.7/lib/sinatra/base.rb:1487:in `block in call'", "/opt/puppetlabs/puppet/lib/ruby/gems/2.1.0/gems/sinatra-1.4.7/lib/sinatra/base.rb:1787:in `synchronize'", "/opt/puppetlabs/puppet/lib/ruby/gems/2.1.0/gems/sinatra-1.4.7/lib/sinatra/base.rb:1487:in `call'", "/opt/puppetlabs/puppet/lib/ruby/gems/2.1.0/gems/rack-1.6.4/lib/rack/handler/webrick.rb:88:in `service'", "/opt/puppetlabs/puppet/lib/ruby/2.1.0/webrick/httpserver.rb:138:in `service'", "/opt/puppetlabs/puppet/lib/ruby/2.1.0/webrick/httpserver.rb:94:in `run'", "/opt/puppetlabs/puppet/lib/ruby/2.1.0/webrick/server.rb:295:in `block in start_thread'"]
[2017-05-30 13:36:47] DEBUG close: $IP:54632

Line 229 in my install corresponds with L238 and the non-zero exit_status when L332 is invoked. This bails out and ends up in the rescue branch. I modified my webhook temporarily to verify the command run and see the actual error it throws:

# tail -f access.log 
[2017-05-30 14:10:01] DEBUG accept: 135.28.170.140:60841
[2017-05-30 14:10:01] DEBUG Rack::Handler::WEBrick is invoked.
[2017-05-30 14:10:01] INFO  Authenticated as user puppet from IP 135.28.170.140
[2017-05-30 14:10:01] INFO  command: umask 0022; r10k deploy environment test -pv branch: test
[2017-05-30 14:10:03] ERROR message:
ERROR    -> Environment(s) 'test' cannot be found in any source and will not be deployed.
INFO     -> Removing unmanaged path /etc/puppetlabs/puppet/environments/test
 trace: ...

# umask 0022; r10k deploy environment test -pv
ERROR    -> Environment(s) 'test' cannot be found in any source and will not be deployed.
# echo $?
1