feat(proxy): test proxy connection with an authenticated route (#110)

Update `test-connection.yaml` in the Unleash proxy Helm chart
to use an authenticated route.

The /proxy/health route of the Unleash proxy does not require
authentication. The Authentication header is ignored for this route.
Even if there's an issue with the way client shared secrets are
configured, the test-connection.yaml test will succeed.

Using the /proxy route (which does require authentication) allows
testing a shared secret.

This change implements the recommended method to test the proxy
deployment from
https://docs.getunleash.io/how-to/how-to-run-the-unleash-proxy#verify-that-the-proxy-is-working

Also update the way `wget` is called (the Authentication header was not
correctly set, but as it was ignored this mistake was not visible).

Note: The same Helm value is used to configure the proxy shared
secrets environment variable, and the authentication header in test-connection.yaml.
As such, as long as the chart is correct, the user can't
actually make a mistake here.

However, this test is misleading to a user reading the chart templates
and manually reproducing the test against the deployed proxy, as the
current test does not actually validates shared secrets.

* chore: bump chart version to 0.6.3

charts/unleash-proxy/Chart.yaml

@@ -15,7 +15,7 @@ type: application
 # This is the chart version. This version number should be incremented each time you make changes
 # to the chart and its templates, including the app version.
 # Versions are expected to follow Semantic Versioning (https://semver.org/)
-version: 0.6.2
+version: 0.6.3
 
 # This is the version number of the application being deployed. This version number should be
 # incremented each time you make changes to the application. Versions are not expected to

charts/unleash-proxy/templates/tests/test-connection.yaml

@@ -11,7 +11,9 @@ spec:
     - name: wget
       image: busybox
       command: ['wget']
-      args: ['-O -',
-             "--header='Authorization: {{ .Values.proxy.clientKeys | first }}'",
-             '{{ include "unleash-proxy.fullname" . }}:{{ .Values.service.port }}/proxy/health']
+      args: [
+        '-O', '-',
+        '--header', 'Authorization: {{ .Values.proxy.clientKeys | first }}',
+        '{{ include "unleash-proxy.fullname" . }}:{{ .Values.service.port }}/proxy'
+        ]
   restartPolicy: Never