Merge pull request #42988 from MaciekPytel/update_ca_manifest

Automatic merge from submit-queue (batch tested with PRs 42802, 42927, 42669, 42988, 43012)

Update Cluster Autoscaler entrypoint

**What this PR does / why we need it**:
Update Cluster Autoscaler manifest file to use new shell wrapper instead of directly calling CA binary (the wrapper is already included in current CA image). 
Add params to improve logging.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #

**Special notes for your reviewer**:

**Release note**:

```release-note
```

cluster/saltbase/salt/cluster-autoscaler/cluster-autoscaler.manifest

@@ -27,9 +27,18 @@
                 "name": "cluster-autoscaler",
                 "image": "gcr.io/google_containers/cluster-autoscaler:v0.5.0-beta1",
                 "command": [
-                    "/bin/sh",
-                    "-c",
-                    "./cluster-autoscaler --kubernetes=http://127.0.0.1:8080?inClusterConfig=f --v=4 {{params}} 1>>/var/log/cluster-autoscaler.log 2>&1"
+                    "./run.sh",
+                    "--kubernetes=http://127.0.0.1:8080?inClusterConfig=f",
+                    "--v=4",
+                    "--stderrthreshold=info",
+                    "--write-status-configmap=true",
+                    "{{params}}"
+                ],
+                "env": [
+                    {
+                        "name": "LOG_OUTPUT",
+                        "value": "/var/log/cluster-autoscaler.log"
+                    }
                 ],
                 # TODO: Make resource requirements depend on the size of the cluster
                 "resources": {