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##### SUMMARY
https://github.com/ansible/ansible/blob/devel/lib/ansible/modules/cloud/misc/terraform.py#L353 expects the plan_file to be a filename not a path to a file.inside of project_path. Works with relative paths but not with absolute paths. Lucky for me I use a path inside project_path but it worked before with paths outside too.

##### ISSUE TYPE
- Bug Report

##### COMPONENT NAME
<!--- Write the short name of the module, plugin, task or feature below, use your best guess if unsure -->
terraform
##### ANSIBLE VERSION
<!--- Paste verbatim output from "ansible --version" between quotes -->
```paste below
ansible 2.8.1
  config file = /home/adam/.ansible.cfg
  configured module search path = ['/home/adam/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /home/adam/.local/lib/python3.6/site-packages/ansible
  executable location = /home/adam/.local/bin/ansible
  python version = 3.6.8 (default, Jan 14 2019, 11:02:34) [GCC 8.0.1 20180414 (experimental) [trunk revision 259383]]
```

##### CONFIGURATION
<!--- Paste verbatim output from "ansible-config dump --only-changed" between quotes -->
```paste below

```

##### OS / ENVIRONMENT
<!--- Provide all relevant information below, e.g. target OS versions, network device firmware, etc. -->


##### STEPS TO REPRODUCE
<!--- Describe exactly how to reproduce the problem, using a minimal test-case -->

<!--- Paste example playbooks or commands between quotes below -->
```yaml
use absolute path for plan_file 
```

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##### EXPECTED RESULTS
<!--- Describe what you expected to happen when running the steps above -->
uses the filepath provided

##### ACTUAL RESULTS
<!--- Describe what actually happened. If possible run with extra verbosity (-vvvv) -->

<!--- Paste verbatim command output between quotes -->
```paste below
TASK [run terraform apply] ***************************************************************************************************************************************************************************************************************************************************************
fatal: [localhost]: FAILED! => {"changed": false, "msg": "Could not find plan_file \"/home/.../plan.tfplan\", check the path and try again."}
```

command = [bin_path, 'workspace', action, workspace, '-no-color']
    rc, out, err = module.run_command(command, cwd=project_path)
    if rc != 0:
        module.fail_json(msg="Failed to {0} workspace:\r\n{1}".format(action, err))
    return rc, out, err
def create_workspace(bin_path, project_path, workspace):
    _workspace_cmd(bin_path, project_path, 'new', workspace)
def select_workspace(bin_path, project_path, workspace):
    _workspace_cmd(bin_path, project_path, 'select', workspace)
def remove_workspace(bin_path, project_path, workspace):
    _workspace_cmd(bin_path, project_path, 'delete', workspace)
def build_plan(command, project_path, variables_args, state_file, targets, state, plan_path=None):
    if plan_path is None:
        f, plan_path = tempfile.mkstemp(suffix='.tfplan')
    plan_command = [command[0], 'plan', '-input=false', '-no-color', '-detailed-exitcode', '-out', plan_path]
    for t in (module.params.get('targets') or []):
        plan_command.extend(['-target', t])
    plan_command.extend(_state_args(state_file))
    rc, out, err = module.run_command(plan_command + variables_args, cwd=project_path, use_unsafe_shell=True)
    if rc == 0:
        
        return plan_path, False, out, err, plan_command if state == 'planned' else command
    elif rc == 1:
        
        module.fail_json(msg='Terraform plan could not be created\r\nSTDOUT: {0}\r\n\r\nSTDERR: {1}'.format(out, err))
    elif rc == 2:
        
        return plan_path, True, out, err, plan_command if state == 'planned' else command
    module.fail_json(msg='Terraform plan failed with unexpected exit code {0}. \r\nSTDOUT: {1}\r\n\r\nSTDERR: {2}'.format(rc, out, err))
def main():