schema_check cannot find default schema outside linch-pin

[herlo]

When creating a virtualenv due to the lack of shade, and a git checkout of linch-pin in a separate directory, invoking linch-pin does not find the default schema.

INVOCATION

(venv)[herlo@x99 venv]$ ansible-playbook -vvv ~/Projects/centos/git/linch-pin/provision/site.yml -e "state=present topology='~/Projects/centos/git/paas-ci/config/topologies/openstack-3node-cluster.yml'"
Using /etc/ansible/ansible.cfg as config file
 [WARNING]: provided hosts list is empty, only localhost is available

[DEPRECATION WARNING]: Specifying include variables at the top-level of the task is deprecated. Please 
see:
http://docs.ansible.com/ansible/playbooks_roles.html#task-include-files-and-encouraging-reuse

 for 
currently supported syntax regarding included files and variables.
This feature will be removed in a 
future release. Deprecation warnings can be disabled by setting deprecation_warnings=False in 
ansible.cfg.

PLAYBOOK: site.yml *************************************************************
4 plays in /home/herlo/Projects/centos/git/linch-pin/provision/site.yml

PLAY [schema check and Pre Provisioning Activities  on topology_file] **********

TASK [setup] *******************************************************************
<127.0.0.1> ESTABLISH LOCAL CONNECTION FOR USER: herlo
<127.0.0.1> EXEC /bin/sh -c '( umask 77 && mkdir -p "` echo $HOME/.ansible/tmp/ansible-tmp-1475612682.44-166143896648227 `" && echo ansible-tmp-1475612682.44-166143896648227="` echo $HOME/.ansible/tmp/ansible-tmp-1475612682.44-166143896648227 `" ) && sleep 0'
<127.0.0.1> PUT /tmp/tmp8vDuY5 TO /home/herlo/.ansible/tmp/ansible-tmp-1475612682.44-166143896648227/setup
<127.0.0.1> EXEC /bin/sh -c 'LANG=en_US.utf8 LC_ALL=en_US.utf8 LC_MESSAGES=en_US.utf8 /usr/bin/python2 /home/herlo/.ansible/tmp/ansible-tmp-1475612682.44-166143896648227/setup; rm -rf "/home/herlo/.ansible/tmp/ansible-tmp-1475612682.44-166143896648227/" > /dev/null 2>&1 && sleep 0'
ok: [localhost]

TASK [common : Including Linchpin config vars] *********************************
task path: /home/herlo/Projects/centos/git/linch-pin/provision/roles/common/tasks/main.yml:3
ok: [localhost] => {"ansible_facts": {"async": false, "async_timeout": 1000, "inventory_layouts_path": "inventory_layouts", "inventory_outputs_path": "inventory_outputs", "inventory_playbooks": ["duffy_inventory.yml"], "inventory_types": ["aws", "gcloud", "openstack", "generic"], "inventoryfolder_path": "inventory", "keystore_path": "keystore", "no_output": false, "outputfolder_path": "outputs", "schema": "ex_schemas/schema_v2.json"}, "changed": false, "invocation": {"module_args": {"_raw_params": "../linchpin_config.yml"}, "module_name": "include_vars"}}

TASK [common : schema check for given topology file] ***************************
task path: /home/herlo/Projects/centos/git/linch-pin/provision/roles/common/tasks/main.yml:6
<127.0.0.1> ESTABLISH LOCAL CONNECTION FOR USER: herlo
<127.0.0.1> EXEC /bin/sh -c '( umask 77 && mkdir -p "` echo $HOME/.ansible/tmp/ansible-tmp-1475612683.93-94860539667658 `" && echo ansible-tmp-1475612683.93-94860539667658="` echo $HOME/.ansible/tmp/ansible-tmp-1475612683.93-94860539667658 `" ) && sleep 0'
<127.0.0.1> PUT /tmp/tmp6g9GwS TO /home/herlo/.ansible/tmp/ansible-tmp-1475612683.93-94860539667658/schema_check
<127.0.0.1> EXEC /bin/sh -c 'LANG=en_US.utf8 LC_ALL=en_US.utf8 LC_MESSAGES=en_US.utf8 /usr/bin/python2 /home/herlo/.ansible/tmp/ansible-tmp-1475612683.93-94860539667658/schema_check; rm -rf "/home/herlo/.ansible/tmp/ansible-tmp-1475612683.93-94860539667658/" > /dev/null 2>&1 && sleep 0'
fatal: [localhost]: FAILED! => {"changed": false, "failed": true, "invocation": {"module_args": {"data": "~/Projects/centos/git/paas-ci/config/topologies/openstack-3node-cluster.yml", "data_format": null, "schema": "ex_schemas/schema_v2.json"}, "module_name": "schema_check"}, "msg": "File not found ex_schemas/schema_v2.json not found"}

NO MORE HOSTS LEFT *************************************************************
    to retry, use: --limit @/home/herlo/Projects/centos/git/linch-pin/provision/site.retry

PLAY RECAP *********************************************************************
localhost                  : ok=2    changed=0    unreachable=0    failed=1   

[herlo]

fixed by #69