Add kompose.image-pull-secret and kompose.image-pull-policy (#1091)

* Add kompose.image-pull-secret

* Add kompose.image-pull-secret tests

* Add kompose.image-pull-policy

* Add kompose.image-pull-policy tests

* ignore .coverprofile

* Fix typo

docs/user-guide.md

@@ -302,6 +302,8 @@ The currently supported options are:
 | kompose.service.expose.tls-secret | secret name |
 | kompose.volume.size | kubernetes supported volume size |
 | kompose.controller.type | deployment / daemonset / replicationcontroller |
+| kompose.image-pull-policy | kubernetes pods imagePullPolicy |
+| kompose.image-pull-secret | kubernetes secret name for imagePullSecrets |
 
 **Note**: `kompose.service.type` label should be defined with `ports` only (except for headless service), otherwise `kompose` will fail.
 
@@ -350,6 +352,19 @@ services:
      - "6379"
 ```
 
+- `kompose.image-pull-secret` defines a kubernetes secret name for imagePullSecrets podspec field.
+This secret will be used for pulling private images.
+For example:
+
+```yaml
+version: '2'
+services:
+  tm-service:
+    image: premium/private-image
+    labels:
+      kompose.image-pull-secret: "example-kubernetes-secret"
+```
+
 - `kompose.volume.size` defines the requests storage's size in the PersistentVolumeClaim
 
 For example:
@@ -399,6 +414,19 @@ db:
 
 Service `web` will be converted to `Deployment` as default, service `db` will be converted to `DaemonSet` because of `kompose.controller.type` label.
 
+- `kompose.image-pull-policy` defines Kubernetes PodSpec imagePullPolicy. One of Always, Never, IfNotPresent. Defaults to Always if :latest tag is specified, or IfNotPresent otherwise.
+
+For example:
+
+```yaml
+version: '2'
+services:
+  example-service:
+    image: example-image
+    labels:
+      kompose.image-pull-policy: "Never"
+```
+
 ## Restart
 
 If you want to create normal pods without controller you can use `restart` construct of docker-compose to define that. Follow table below to see what happens on the `restart` value.