Move samples.yml to stack.yml (default) and update references in shell scripts

Signed-off-by: Alex Ellis <alexellis2@gmail.com>

stack.yml

@@ -0,0 +1,52 @@
+provider:
+  name: faas
+  gateway: http://localhost:8080  # can be a remote server
+  network: "func_functions"       # this is optional and defaults to func_functions
+
+functions:
+  url-ping:
+    lang: python
+    handler: ./sample/url-ping
+    image: alexellis/faas-url-ping:0.1
+    limits:
+      memory: 10m
+    requests:
+      memory: 10m
+
+  stronghash:
+    skip_build: true
+    image: functions/alpine:latest
+    fprocess: "sha512sum"
+    limits:
+      memory: 10m
+    requests:
+      memory: 10m
+
+  nodejs-echo:
+    lang: node
+    handler: ./sample/nodejs-echo
+    image: alexellis/faas-nodejs-echo:0.1
+    limits:
+      memory: 30m
+    requests:
+      memory: 30m
+
+  # curl localhost:8080/function/shrink-image --data-binary @big.png > smaller.png
+  shrink-image:
+    lang: dockerfile
+    handler: ./sample/imagemagick
+    image: functions/resizer:0.1
+    fprocess: "convert - -resize 50% fd:1"
+    limits:
+      memory: 20m
+    requests:
+      memory: 20m
+
+  ruby-echo:
+    lang: ruby
+    handler: ./sample/ruby-echo
+    image: alexellis/ruby-echo:0.1
+    limits:
+      memory: 10m
+    requests:
+      memory: 10m