Added autospotting catalog entry (#601)

templates/autospotting/0/README.md

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+# Autospotting
+
+### Info
+This service builds upon the open source autospotting at [https://github.com/cristim/autospotting](https://github.com/cristim/autospotting)
+
+This has been turned into a Rancher catalog entry with a couple of minor tweaks and the removal of the requirement to run it as a lambda function, it now runs as a docker container.
+
+Autospotting works by taking a tag that you specify and adding it to an AWS Auto-Scaling Group with a value of true.
+
+The container will then run and check for on-demand instances and replace them with cheap spot instances. This is a gradual process and will only replace one host in an ASG at a time.
+

templates/autospotting/0/docker-compose.yml

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+aws-spot-instance-helper:
+  image: chrisurwin/autospotting:v0.1.0
+  tty: true
+  labels:
+    io.rancher.container.pull_image: always
+  environment:
+    AWS_ACCESS_KEY_ID: "${AWS_ACCESS_KEY_ID}"
+    AWS_SECRET_ACCESS_KEY: "${AWS_SECRET_ACCESS_KEY}"
+    regions: "${regions}"
+    min_on_demand_number: "${min_on_demand_number}"
+    min_on_demand_percentage: "${min_on_demand_percentage}"
+    allowed_instance_types: "${allowed_instance_types}"
+    tag_name: "${tag_name}"

templates/autospotting/0/rancher-compose.yml

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+.catalog:
+    name: "Autospotting"
+    version: "v0.1.0"
+    description: "Autospotting"
+    minimum_rancher_version: v1.0.0
+    questions:
+     - variable: "AWS_ACCESS_KEY_ID"
+       description: "AWS Access Key"
+       label: "AWS Access Key"
+       required: true
+       type: "string"
+     - variable: "AWS_SECRET_ACCESS_KEY"
+       description: "AWS Secret Key"
+       label: "Access Secret"
+       required: true
+       type: "string" 
+     - variable: "regions"
+       description: "Regions where it should be activated (comma or whitespace separated list, also supports globs), by default it runs on all regions. Example: 'eu-*,us-east-1"
+       label: "AWS Regions"
+       required: false
+       type: "string" 
+     - variable: "min_on_demand_number"
+       description: "On-demand capacity (as absolute number) ensured to be running in each of your groups"
+       label: "Minimum on demand number"
+       required: false
+       type: "string" 
+     - variable: "min_on_demand_percentage"
+       description: "On-demand capacity (percentage of the total number of instances in the group) ensured to be running in each of your groups. Defaults to 0"
+       label: "Minimum on demand percentage"
+       required: false
+       type: "string" 
+     - variable: "allowed_instance_types"
+       description: "If specified, the spot instances will have a specific instance type"
+       label: "Allowed instance types"
+       required: false
+       type: "string" 
+     - variable: "tag_name"
+       description: "If specified you can tag instances with a specific tag to process, default is spot-enabled"
+       label: "Tag name"
+       required: false
+       type: "string" 
+
+aws-spot-instance-helper:
+    health_check:
+        port: 9777
+        interval: 2000
+        unhealthy_threshold: 3
+        strategy: recreate
+        response_timeout: 2000
+        request_line: GET /ping HTTP/1.0
+        healthy_threshold: 2

templates/autospotting/config.yml

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+name: AutoSpotting
+description: |
+  Replaces AWS On-Demand instances with cheaper Spot-Instances where possible
+version: v0.1.0
+category: Infrastructure Services