Merge pull request #425 from Xtigyro/feature/add-full-dried-example

 Add DRY-ed Example

docs/how_to/misc/use-dry-code.md

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+---
+version: v3.0.0
+---
+
+# Use DRY-ed code in YAML
+
+If you want to use as a baseline or deploy the DRY-ed example, please refer to the provided [app templates](../../../examples/appsTemplates)

examples/appsTemplates/README.md

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+# DRY-ed Example
+
+## Execution Plan
+
+To deploy the DRY-ed example, the app templates placed in [config](config) and [apps](apps) need to be used. To do so - please run:
+
+```bash
+helmsman -apply -f config/helmsman.yaml
+```
+
+> **Tip**: That kind of DRY-ed code can be achieved only using YAML desired state files.

examples/appsTemplates/apps/puppetserver/common-values.yaml

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+puppetserver:
+  puppeturl: 'https://github.com/puppetlabs/control-repo.git'

examples/appsTemplates/apps/puppetserver/development-values.yaml

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+r10k:
+  code:
+    cronJob:
+      schedule: "*/2 * * * *"

examples/appsTemplates/apps/puppetserver/testing-values.yaml

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+r10k:
+  code:
+    cronJob:
+      schedule: "*/1 * * * *"

examples/appsTemplates/apps/tomcat/common-values.yaml

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+resources:
+  limits:
+    cpu: 100m
+    memory: 256Mi
+  requests:
+    cpu: 100m
+    memory: 256Mi

examples/appsTemplates/apps/tomcat/development-values.yaml

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+hostPort: 8009

examples/appsTemplates/apps/tomcat/testing-values.yaml

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+hostPort: 8010

examples/appsTemplates/config/helmsman.yaml

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+metadata:
+  scope: "K8s Cluster kind-1"
+  maintainer: "devops"
+
+settings:
+  kubeContext: "kind-kind-1"   # the name of the context to be created
+  slackWebhook: "$MY_SLACK_WEBHOOK"
+
+namespaces:
+  testing:
+    labels:
+      env: "testing"
+    limits:
+      - type: Container
+        default:
+          cpu: "200m"
+          memory: "250Mi"
+        defaultRequest:
+          cpu: "100m"
+          memory: "150Mi"
+      - type: Pod
+        max:
+          memory: "300Mi"
+  development:
+    labels:
+      env: "development"
+    limits:
+      - type: Container
+        default:
+          cpu: "300m"
+          memory: "300Mi"
+        defaultRequest:
+          cpu: "200m"
+          memory: "200Mi"
+      - type: Pod
+        max:
+          memory: "400Mi"
+
+helmRepos:
+  stable: "https://kubernetes-charts.storage.googleapis.com"
+
+appsTemplates:
+  common: &common
+    test: true
+
+  testing: &testing
+    namespace: "testing"
+    protected: false   # defining all "testing" releases to be protected.
+    wait: true
+
+  development: &development
+    namespace: "development"
+    protected: true   # defining all "development" releases to be protected.
+    wait: false
+
+  puppetserver: &puppetserver
+    enabled: true
+    priority: -1
+    chart: "../../../../puppetserver-helm-chart-1.8.2.tgz"   # https://github.com/puppetlabs/pupperware/tree/master/k8s
+    version: "1.8.2"   # chart version
+    valuesFiles: [
+        "../apps/puppetserver/common-values.yaml",
+    ]
+
+  tomcat: &tomcat
+    enabled: true
+    priority: -2
+    chart: "stable/tomcat"
+    version: "0.4.0"   # chart version
+    valuesFiles: [
+        "../apps/tomcat/common-values.yaml",
+    ]
+
+apps:
+  testing-puppetserver:
+    <<: *common
+    <<: *testing
+    <<: *puppetserver
+    valuesFiles: [
+        "../apps/puppetserver/testing-values.yaml",
+    ]
+
+  testing-tomcat:
+    <<: *common
+    <<: *testing
+    <<: *tomcat
+    valuesFiles: [
+        "../apps/tomcat/testing-values.yaml",
+    ]
+
+  development-puppetserver:
+    <<: *common
+    <<: *development
+    <<: *puppetserver
+    valuesFiles: [
+        "../apps/puppetserver/development-values.yaml",
+    ]
+
+  development-tomcat:
+    <<: *common
+    <<: *development
+    <<: *tomcat
+    valuesFiles: [
+        "../apps/tomcat/development-values.yaml",
+    ]