Move Zuul config in-repo

This moves the Zuul project configuration into this repo rather
than project-config for easier modification of check/gate jobs.

Change-Id: I235a0584d2b0156406b2d07848d484a9148d064e

.zuul.d/project.yaml

@@ -0,0 +1,24 @@
+- project:
+    templates:
+      - openstack-cover-jobs
+      - check-requirements
+      - openstack-python-jobs
+      - openstack-python35-jobs
+      - release-notes-jobs
+    check:
+      jobs:
+        - openstack-tox-pylint
+        - nodepool-functional-py35-redhat-src
+        - nodepool-functional-py35-ubuntu-src
+    gate:
+      jobs:
+        - openstack-tox-pylint
+        - nodepool-functional-py35-redhat-src
+        - nodepool-functional-py35-ubuntu-src
+    experimental:
+      jobs:
+        - nodepool-functional-py35-gentoo-src
+        - nodepool-functional-py35-debian-src
+        - nodepool-functional-py35-suse-src
+        - octavia-v1-dsvm-scenario
+        - octavia-v1-dsvm-py3x-scenario