Add feature_gates profile option

It is possible now to enable Kubernetes feature gates[1] using minikube
--feature-gates option[2]. We will use this to enable
StatefulSetAutoDeletePVC feature gate.

Example config:

    profiles:
      - name: featured
        feature_gates:
          - StatefulSetAutoDeletePVC=true

[1] https://kubernetes.io/docs/reference/command-line-tools-reference/feature-gates/
[2] https://minikube.sigs.k8s.io/docs/handbook/config/#enabling-feature-gates

Signed-off-by: Nir Soffer <[email protected]>

test/README.md

@@ -490,6 +490,10 @@ $ drenv delete envs/example.yaml
     - `extra_config`: List of extra config key=value. Each item adds
       `--extra-config` minikube option. See `minikube start --help` to
       see the possible keys and values.
+    - `feature_gates`: List of Kubernetes feature gates key=value. Each
+      item adds `--feature-gates` minikube option. See
+      [Feature Gates](https://kubernetes.io/docs/reference/command-line-tools-reference/feature-gates/)
+      for possible keys and values.
     - `containerd`: Optional containerd configuration object. See
       `containerd config default` for available options.
     - `workers`: Optional list of workers to run when starting a

test/drenv/__main__.py

@@ -207,6 +207,7 @@ def start_minikube_cluster(profile, verbose=False):
         addons=profile["addons"],
         service_cluster_ip_range=profile["service_cluster_ip_range"],
         extra_config=profile["extra_config"],
+        feature_gates=profile["feature_gates"],
         alsologtostderr=verbose,
     )
 

test/drenv/envfile.py

@@ -106,6 +106,7 @@ def _validate_profile(profile, addons_root):
     profile.setdefault("ser", [])
     profile.setdefault("service_cluster_ip_range", None)
     profile.setdefault("extra_config", [])
+    profile.setdefault("feature_gates", [])
     profile.setdefault("containerd", None)
     profile.setdefault("workers", [])
 

test/drenv/minikube.py

@@ -38,6 +38,7 @@ def start(
     addons=(),
     service_cluster_ip_range=None,
     extra_config=None,
+    feature_gates=None,
     alsologtostderr=False,
 ):
     args = []
@@ -72,6 +73,10 @@ def start(
         for pair in extra_config:
             args.extend(("--extra-config", pair))
 
+    if feature_gates:
+        for pair in feature_gates:
+            args.extend(("--feature-gates", pair))
+
     if alsologtostderr:
         args.append("--alsologtostderr")