scripts/pythondistdeps: Add tests

The test data download themselves using pip if not present

tests/data/scripts_pythondistdeps/test-requires.yaml

@@ -0,0 +1,94 @@
+setuptools:
+    wheel:
+        '41.6.0': ['2.7', '3.7', '3.9']
+    sdist:
+        '41.6.0': ['2.7', '3.7', '3.9', '3.10']
+pip:
+    wheel:
+        '19.1.1': ['2.7', '3.7']
+        '20.0.2': ['3.9']
+    sdist:
+        '20.0.2': ['3.11']
+packaging:
+    wheel:
+        '19.0': ['2.7', '3.7']
+        '20.1': ['3.9']
+attrs:
+    sdist:
+        '19.1.0': ['2.7', '3.9']
+pyparsing:
+    wheel:
+        '2.4.0': ['2.7', '3.7', '3.9']
+six:
+    wheel:
+        '1.12.0': ['2.7', '3.7', '3.9']
+tox:
+    wheel:
+        '3.14.0': ['2.7', '3.7', '3.9']
+urllib3:
+    sdist:
+        '1.25.7': ['2.7', '3.9']
+zope.component:
+    sdist:
+        '4.3.0': ['2.7', '3.9']
+zope.event:
+    wheel:
+        '4.2.0': ['2.7', '3.9']
+zope.schema:
+    sdist:
+        '4.4.2': ['2.7', '3.9']
+zope.interface:
+    sdist:
+        '5.1.0': ['3.9']
+    wheel:
+        '4.6.0': ['2.7']
+lxml:
+    lib: lib64
+    wheel:
+        '4.4.0': ['2.7', '3.7']
+scipy:
+    lib: lib64
+    wheel:
+        '1.2.1': ['2.7', '3.7']
+numpy:
+    lib: lib64
+    wheel:
+        '1.16.4': ['2.7']
+        '1.17.4': ['3.7']
+numpy-stl:
+    lib: lib64
+    sdist:
+        '2.11.2': ['2.7', '3.7', '3.9']
+PyQt5_sip:
+    lib: lib64
+    wheel:
+        '4.19.19': ['3.7']
+PyQtWebEngine:
+    lib: lib64
+    wheel:
+        '5.12.1': ['3.7', '3.9']
+MarkupSafe:
+    lib: lib64
+    wheel:
+        '1.1.1': ['2.7', '3.7']
+simplejson:
+    lib: lib64
+    sdist:
+        '3.16.0': ['2.7', '3.7', '3.9']
+backports.range:
+    lib: lib64
+    sdist:
+        '3.7.2': ['2.7', '3.7', '3.9']
+mistune:
+    sdist:
+        '0.8.4': ['2.7', '3.9']
+astroid:
+    wheel:
+        '2.3.3': ['3.7', '3.9']
+kubernetes:
+    wheel:
+        '11.0.0b2': ['2.7']
+        '11.0.0': ['3.9']
+fsleyes:
+    wheel:
+        '0.32.3': ['3.9']