fix run_model_validate

  * We can have multiple pillars
  * We can filter not good for schema pillars via IGNORE_MODELVALIDATE_MASK
  * Misc fixes related to pip

Change-Id: I5edbb24952dd5fd821191b761360b26ca65f9b9e
diff --git "a/\173\173cookiecutter.service_name\175\175/tests/test-requirements.txt" "b/\173\173cookiecutter.service_name\175\175/tests/test-requirements.txt"
new file mode 100644
index 0000000..a0f561a
--- /dev/null
+++ "b/\173\173cookiecutter.service_name\175\175/tests/test-requirements.txt"
@@ -0,0 +1,2 @@
+jsonschema
+reno