Scripts and readme (#258)

* Avoid race condition when deploying quickstart example

The namespace and CRD creation must happen before any dependent objects
are created.  So we can put these in a separate directory (manifest/setup)
so they can be created before the other objects.

Some minor updates to the README and added a couple of scripts
for the quickstarts

Update travis script to avoid race condition

Signed-off-by: Paul Gier <pgier@redhat.com>

* simplify the example quickstart script and improve readme

Signed-off-by: Paul Gier <pgier@redhat.com>

* increase minikube memory to 6g for quickstart example

manifests/setup/prometheus-operator-deployment.yaml

@@ -0,0 +1,48 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  labels:
+    app.kubernetes.io/component: controller
+    app.kubernetes.io/name: prometheus-operator
+    app.kubernetes.io/version: v0.33.0
+  name: prometheus-operator
+  namespace: monitoring
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app.kubernetes.io/component: controller
+      app.kubernetes.io/name: prometheus-operator
+  template:
+    metadata:
+      labels:
+        app.kubernetes.io/component: controller
+        app.kubernetes.io/name: prometheus-operator
+        app.kubernetes.io/version: v0.33.0
+    spec:
+      containers:
+      - args:
+        - --kubelet-service=kube-system/kubelet
+        - --logtostderr=true
+        - --config-reloader-image=quay.io/coreos/configmap-reload:v0.0.1
+        - --prometheus-config-reloader=quay.io/coreos/prometheus-config-reloader:v0.33.0
+        image: quay.io/coreos/prometheus-operator:v0.33.0
+        name: prometheus-operator
+        ports:
+        - containerPort: 8080
+          name: http
+        resources:
+          limits:
+            cpu: 200m
+            memory: 200Mi
+          requests:
+            cpu: 100m
+            memory: 100Mi
+        securityContext:
+          allowPrivilegeEscalation: false
+      nodeSelector:
+        beta.kubernetes.io/os: linux
+      securityContext:
+        runAsNonRoot: true
+        runAsUser: 65534
+      serviceAccountName: prometheus-operator