split up installation for core and kapi+grapi (#293)

* split up installation for core and kapi+grapi
* add some debug output in case package installation fails
* let konnect run as nobody
* add code to check writing permissions for certificates and create certificates in container if possible
* add tests to check on failed and successful certificate creation
* add certificate creation logic from the konnect binfile
* add env for custom dockerize timeout (to fail earlier in tests)

konnect/commander.yaml

@@ -35,6 +35,28 @@ tests:
     config:
       env:
         identifier_registration_conf: /etc/kopano/konnectd-identifier-registration.yaml
+  no write permissions for certificates:
+    command: /commander/test-helper.sh && wrapper.sh
+    exit-code: 1
+    stderr:
+      contains:
+        - "can't create /root/sign.key: Permission denied"
+        - 'Timeout after 1s waiting on dependencies to become available: [file:///root/sign.key]'
+    config:
+      env:
+        signing_private_key: /root/sign.key
+        DOCKERIZE_TIMEOUT: 1s
+  certificate creation in container:
+    command: /commander/test-helper.sh && wrapper.sh
+    stderr:
+      contains:
+        - "setup: creating new RSA private key at"
+      not-contains:
+        - "Timeout after 360s waiting on dependencies to become available:"
+    config:
+      env:
+        signing_private_key: /tmp/sign.key
+        encryption_secret_key: /tmp/secret.key
 config:
   env:
     PATH: ${PATH}