Add local bindep.txt

As it was announced [1] global bindep-fallback.txt was removed and now
projects need to have a local bindep.txt to be able to install binary
dependencies for testing.

In test jobs the script tools/test-setup.sh is called which requires
mysql and postgres servers and clients to be installed.

Conflicts:
      tox.ini

[1] http://lists.openstack.org/pipermail/openstack-discuss/2019-June/007272.html

Change-Id: I37d64aca485eb81ac16d7d85d5b695e573c8793c
(cherry picked from commit ddd5378ac8)
(cherry picked from commit 61f8206c45)
(cherry picked from commit 83cbcc50f5)

bindep.txt

@@ -0,0 +1,9 @@
+# This is a cross-platform list tracking distribution packages needed for install and tests;
+# see https://docs.openstack.org/infra/bindep/ for additional information.
+
+libpq-dev [platform:dpkg]
+mysql-client [platform:dpkg]
+mysql-server [platform:dpkg]
+postgresql
+postgresql-client [platform:dpkg]
+

tox.ini

@@ -89,3 +89,15 @@ exclude=.venv,.git,.tox,dist,doc,*lib/python*,*egg,build
 local-check-factory = murano.hacking.checks.factory
 import_exceptions = oslo.db.sqlalchemy.test_base,
                     murano.common.i18n
+
+[testenv:bindep]
+basepython = python3
+# Do not install any requirements. We want this to be fast and work even if
+# system dependencies are missing, since it's used to tell you what system
+# dependencies are missing! This also means that bindep must be installed
+# separately, outside of the requirements files, and develop mode disabled
+# explicitly to avoid unnecessarily installing the checked-out repo too (this
+# further relies on "tox.skipsdist = True" above).
+deps = bindep
+commands = bindep test
+usedevelop = False