fix(docker/k8s): Fix image naming

We had previously hack with hardcoding ghcr.io.
Now we make it more flexible, so people can set their own
image url, and our staging instance automatically add staging-
prefix in appropriate place.

Signed-off-by: Denys Fedoryshchenko <denys.f@collabora.com>

Author: nuclearcat

config/runtime/base/kubernetes.jinja2

@@ -32,7 +32,7 @@ spec:
 
       containers:
       - name: kernelci
-        image: ghcr.io/{{ runtime_image }}
+        image: {{ runtime_image }}
         imagePullPolicy: Always
 
         volumeMounts:

kernelci/runtime/__init__.py

@@ -147,6 +147,7 @@ def get_params(self, job, api_config=None):
                 if not device_dtb:
                     print(f"dtb file {job.platform_config.dtb} not found!")
                     return None
+
         params = {
             'api_config': api_config or {},
             'storage_config': job.storage_config or {},