readiness: test apache APIs provide http response to request

This PS updates the readiness probes to test for an http response
to requests.

Change-Id: If102b4f247cc8524ceb02e6b2d22cd854a8fb9d2

horizon/templates/deployment.yaml

@@ -66,8 +66,12 @@ spec:
           ports:
             - containerPort: {{ .Values.network.port }}
           readinessProbe:
-            tcpSocket:
+            httpGet:
+              scheme: HTTP
+              path: /
               port: {{ .Values.network.port }}
+            initialDelaySeconds: 15
+            periodSeconds: 10
           volumeMounts:
             - name: static-horizon
               mountPath: /var/www/html/

keystone/templates/deployment-api.yaml

@@ -67,8 +67,12 @@ spec:
             - name: api-admin
               containerPort: {{ .Values.network.admin.port }}
           readinessProbe:
-            tcpSocket:
+            httpGet:
+              scheme: HTTP
+              path: /
               port: {{ .Values.network.api.port }}
+            initialDelaySeconds: 15
+            periodSeconds: 10
           volumeMounts:
           - name: etckeystone
             mountPath: /etc/keystone

nova/templates/deployment-placement.yaml

@@ -64,8 +64,11 @@ spec:
           ports:
             - containerPort: {{ .Values.network.placement.port }}
           readinessProbe:
+            #NOTE(portdirect): use tcpSocket check as HTTP will return 401
             tcpSocket:
               port: {{ .Values.network.placement.port }}
+            initialDelaySeconds: 15
+            periodSeconds: 10
           volumeMounts:
             - name: wsgi-nova
               mountPath: /var/www/cgi-bin/nova