Build collection with 2.10 and ignore things more better

We need 2.10 for building collection tarballs with build_ignore.
Also, build_ignore takes globs, not leading filepaths, so add
globs to the dirs in our list so that we properly don't include
these.

Change-Id: I809e100fa80bffafda4002487590a6dcd6aea0c1

galaxy.yml.in

@@ -15,13 +15,13 @@ homepage: https://opendev.org
 issues: https://review.opendev.org/q/project:openstack/ansible-collections-openstack
 build_ignore:
   - "*.tar.gz"
-  - build_artifact/
-  - ci/
+  - build_artifact/*
+  - ci/*
   - galaxy.yml.in
   - setup.cfg
   - test-requirements.txt
-  - tests/
-  - tools/
+  - tests/*
+  - tools/*
   - tox.ini
   - .zuul.yaml
   - .pytest_cache

tox.ini

@@ -27,7 +27,14 @@ commands = stestr run {posargs}
 commands =
     flake8
 
+# NOTE(mordred): Until ansible 2.10 is released we need to override deps for this env
+# here because we need to use 2.10 galaxy to build the collection and properly
+# respect build_ignore
 [testenv:build]
+deps =
+    pbr
+    ruamel.yaml
+    git+https://github.com/ansible/ansible
 commands =
     python {toxinidir}/tools/build.py
     ansible-galaxy collection build --force {toxinidir} --output-path {toxinidir}/build_artifact