Merge pull request #48439 from juju-solutions/bug/namespaces-path

Automatic merge from submit-queue (batch tested with PRs 48439, 48440, 48394)

Fix: namespace-create have kubectl in path

**What this PR does / why we need it**: In juju deployed clusters namespace-create action is failing

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes https://github.com/juju-solutions/bundle-canonical-kubernetes/issues/326

**Special notes for your reviewer**:

**Release note**:

```Fix: namespace-create action on Juju deployed clusters
```

cluster/juju/layers/kubernetes-master/actions/namespace-create

@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-
+import os
 from yaml import safe_load as load
 from charmhelpers.core.hookenv import (
     action_get,
@@ -11,6 +11,9 @@ from charms.templating.jinja2 import render
 from subprocess import check_output
 
 
+os.environ['PATH'] += os.pathsep + os.path.join(os.sep, 'snap', 'bin')
+
+
 def kubectl(args):
     cmd = ['kubectl'] + args
     return check_output(cmd)