Fix leap_cli ci build

https://0xacab.org/elijah/leap_cli/builds/2294 is failing, and i tried to debug locally (that's why gitlab ci is so super awesome):

--- git/leap_cli ‹develop› » git co -b bugfix_ci elijah_acab/bugfix/ci

--- git/leap_cli ‹bugfix_ci› » gitlab-runner exec docker test
Running with gitlab-ci-multi-runner 1.6.0 (01b3ea1)
Using Docker executor with image leapcode/ruby:2.1-slim ...
Pulling docker image leapcode/ruby:2.1-slim ...
Running on runner--project-1-concurrent-0 via rocinante...
Cloning repository...
Cloning into '/builds/project-1'...
done.
Checking out 708c3b42 as bugfix_ci...
$ bundle install --path vendor/bundle --with test
Fetching gem metadata from https://rubygems.org/
Fetching version metadata from https://rubygems.org/
Resolving dependencies...
Installing rake 11.3.0
Installing builder 3.2.2
Installing excon 0.53.0
Installing multipart-post 2.0.0
Installing formatador 0.2.5
Installing multi_json 1.12.1
Installing mini_portile2 2.1.0
Installing pkg-config 1.1.7
Installing ipaddress 0.8.3
Installing gli 2.14.0
Installing json_pure 1.8.3
Installing net-ssh 3.2.0
Installing ya2yaml 0.31
Installing minitest 5.9.1
Using bundler 1.12.5
Installing faraday 0.9.2
Installing fog-core 1.43.0
Installing nokogiri 1.6.8 with native extensions
Installing net-scp 1.2.1
Installing fog-json 1.0.2
Installing fog-xml 0.1.2
Installing sshkit 1.11.3
Installing fog-aws 0.12.0
Using leap_cli 1.9 from source at `.`
Bundle complete! 3 Gemfile dependencies, 24 gems now installed.
Bundled gems are installed into ./vendor/bundle.
$ git clone --depth=1 https://leap.se/git/leap_platform.git -b develop
Cloning into 'leap_platform'...
$ chmod -R a+rwX test/provider
$ useradd -ms /bin/bash testuser
$ pwd
/builds/project-1
$ su -c pwd testuser
/builds/project-1
$ su -c whoami testuser
testuser
$ su -c "PLATFORM_DIR=$(readlink -e leap_platform) bundle exec rake test" testuser
Run options: --seed 54364

# Running:

....

at this point the output stalls.

I started a bash in the docker container and saw that it was hanging with this process:

--- git/leap_cli ‹bugfix_ci› » docker ps                                                                                          1 ↵
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS               NAMES
225dc9050e31        87a3bdb0ba19        "sh -c 'if [ -x /usr/"   11 minutes ago      Up 11 minutes                           runner--project-1-concurrent-0-build


--- git/leap_cli ‹bugfix_ci› » docker exec -it 225dc9050e31 /bin/bash

root@runner--project-1-concurrent-0:/# ps aux|more
USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
root         1  0.0  0.0  20068   132 ?        Ss   18:06   0:00 /bin/bash
root         8  0.0  0.0  20080   124 ?        S    18:06   0:00 /bin/bash
root     12493  0.0  0.0  44760   148 ?        S    18:08   0:00 su -c PLATFORM_DIR=/builds/project-1/leap_platform bundle exec rake test testuser
testuser 12494  0.0  0.0  99864   696 ?        Ssl  18:08   0:00 /builds/project-1/vendor/bundle/ruby/2.1.0/bin/rake     
testuser 12508  0.0  0.0   4336     0 ?        S    18:08   0:00 sh -c /usr/local/bin/ruby -I"lib" -I"/builds/project-1/vendor/bundle/ruby/2.1.0/gems/rake-11.3.0/lib" "/builds/project-1/vendor/bundle/ruby/2.1.0/gems/rake-11.3.0/lib/rake/rake_test_loader.rb" "test/unit/*_test.rb" 
testuser 12509 29.4 70.2 12890184 8433112 ?    Sl   18:08   3:09 /usr/local/bin/ruby -Ilib -I/builds/project-1/vendor/bundle/ruby/2.1.0/gems/rake-11.3.0/lib /builds/project-1/vendor/bundle/ruby/2.1.0/gems/rake-11.3.0/lib/rake/rake_test_loader.rb test/unit/*_test.rb
testuser 12546  0.0  0.0   4336     0 ?        S    18:08   0:00 sh -c cd /tmp/test_leap_provider_20160928-12509-are91h && /builds/project-1/bin/leap --no-color new --contacts me@example.org --domain example.org --name Example --platform='/builds/project-1/../leap_platform' .
testuser 12547 99.0  0.1 106804 20484 ?        Rl   18:08  10:35 ruby /builds/project-1/bin/leap --no-color new --contacts me@example.org --domain example.org --name Example --platform=/builds/project-1/../leap_platform .
root     12555  0.0  0.0  20232  2744 ?        Ss   18:18   0:00 /bin/bash
root     12563  0.0  0.0  17500  1904 ?        R+   18:19   0:00 ps aux
root     12564  0.0  0.0   6464   776 ?        S+   18:19   0:00 more

(from redmine: created on 2016-09-28, closed on 2016-09-29)