Set locale to fix yamlllint
Set locale to fix yamlllint

Attempting to fix;

```
21:16:00 Traceback (most recent call last):
21:16:00 File "/usr/local/bin/yamllint", line 11, in <module>
21:16:00 sys.exit(run())
21:16:00 File "/usr/local/lib/python3.5/dist-packages/yamllint/cli.py", line 170, in run
21:16:00 problems = linter.run(f, conf, filepath)
21:16:00 File "/usr/local/lib/python3.5/dist-packages/yamllint/linter.py", line 233, in run
21:16:00 content = input.read()
21:16:00 File "/usr/lib/python3.5/encodings/ascii.py", line 26, in decode
21:16:00 return codecs.ascii_decode(input, self.errors)[0]
21:16:00 UnicodeDecodeError: 'ascii' codec can't decode byte 0xe2 in position 123522: ordinal not in range(128)
21:16:00 Build step 'Execute shell' marked build as failure
```

Signed-off-by: Sebastiaan van Stijn <64b2b6d12bfe4baae7dad3d018f8cbf6b0e7a044@gone.nl>

moby/moby,konstruktoid/docker-1,nalind/docker,trebonian/docker,Ramzec/docker,moby/moby,moby/moby,vdemeester/docker,vdemeester/docker,Ramzec/docker,konstruktoid/docker-upstream,mahak/docker,justincormack/docker,vdemeester/docker,jimjag/docker,yosifkit/docker,tmp6154/docker,docker/docker,thaJeztah/docker,ibuildthecloud/docker,mahak/docker,djs55/docker,jvanz/docker,konstruktoid/docker-1,nalind/docker,gnailuy/docker,jimjag/docker,flavio/docker,nawawi/docker,konstruktoid/docker-upstream,flavio/docker,AkihiroSuda/docker,Mokolea/docker,nalind/docker,yongtang/docker,yosifkit/docker,thaJeztah/docker,Mokolea/docker,jimjag/docker,docker/docker,trebonian/docker,nawawi/docker,estesp/docker,kolyshkin/moby,moul/docker,SvenDowideit/docker,bearstech/moby,flavio/docker,AkihiroSuda/docker,moul/docker,SvenDowideit/docker,bearstech/moby,konstruktoid/docker-1,yosifkit/docker,bearstech/moby,jvanz/docker,cpuguy83/docker,kojiromike/docker,djs55/docker,thaJeztah/docker,estesp/docker,dims/docker,pradipd/moby,bearstech/moby,dims/docker,justincormack/docker,ibuildthecloud/docker,kolyshkin/moby,trebonian/docker,kojiromike/docker,nawawi/docker,docker/docker,tmp6154/docker,yongtang/docker,Ramzec/docker,konstruktoid/docker-upstream,tmp6154/docker,gnailuy/docker,jimjag/docker,mahak/docker,konstruktoid/docker-upstream,ibuildthecloud/docker,jvanz/docker,paralin/docker,yosifkit/docker,paralin/docker,djs55/docker,AkihiroSuda/docker,gnailuy/docker,gnailuy/docker,jameszhan/docker,moul/docker,trebonian/docker,flavio/docker,cpuguy83/docker,cpuguy83/docker,paralin/docker,mahak/docker,pradipd/moby,jthelin/docker,ibuildthecloud/docker,nawawi/docker,jthelin/docker,cpuguy83/docker,jameszhan/docker,moul/docker,dims/docker,yongtang/docker,kolyshkin/moby,AkihiroSuda/docker,justincormack/docker,thaJeztah/docker,pradipd/moby,nalind/docker,kojiromike/docker,paralin/docker,jameszhan/docker,estesp/docker,Ramzec/docker,Mokolea/docker,ibuildthecloud/docker,SvenDowideit/docker,moby/moby,Mokolea/docker