Add support for enhanced code-smell tests.

[mattclay]

SUMMARY

Add support for enhanced code-smell tests:

• Path selection handled by ansible-test.
• Optional path filtering based on extension.
• Optional path filtering based on prefixes.
• Optional lint friendly output.

Two code-smell tests have been updated to use these new features:

• no-assert
• no-tests-as-filters

ISSUE TYPE

Feature Pull Request

COMPONENT NAME

ansible-test

ANSIBLE VERSION

ansible 2.6.0 (at-code-smell 65f24d5b90) last updated 2018/02/16 12:42:51 (GMT -700)
  config file = None
  configured module search path = [u'/Users/mclay/.ansible/plugins/modules', u'/usr/share/ansible/plugins/modules']
  ansible python module location = /Users/mclay/code/mattclay/ansible/lib/ansible
  executable location = /Users/mclay/code/mattclay/ansible/bin/ansible
  python version = 2.7.11 (default, Jan 22 2016, 08:29:18) [GCC 4.2.1 Compatible Apple LLVM 7.0.2 (clang-700.1.81)]

[sivel]

I've tested both modified tests and they work as expected:

Sanity check using no-tests-as-filters
ERROR: Found 1 no-tests-as-filters issue(s) which need to be resolved:
ERROR: boom.yml:11:13: use `boom is failed` instead of `boom | failed`
ERROR: The 1 sanity test(s) listed below (out of 1) failed. See error output above for details.
no-tests-as-filters

Sanity check using no-assert
ERROR: Found 1 no-assert issue(s) which need to be resolved:
ERROR: lib/ansible/boom.py:1:1: raise AssertionError instead of: assert '1' == '2'
ERROR: The 1 sanity test(s) listed below (out of 1) failed. See error output above for details.
no-assert

LGTM