WIP: Kopano Konnect und Rest API (#72)

* add a new image for konnect
* add konnect to compose file
* adapt gencerts for konnect certs
* integrate gencerts into start.sh and adapt if to only skip individual parts
* add container for kapi
* use same config for webapp and z-push as https://stash.kopano.io/projects/KGOL/repos/kweb/browse/config/legacy.go
* use example compose file in make test target
* make compose file configurable through an env variable
* remove legacy links in compose
* write certificates first to a tempfile
* remove unnecessary paths
* add option to run kapi insecure for testing
* configure openid for kopano-server
* add local playground to test functionality of konnect and kapi
* print errors and logs to stdout in web
* add extrahosts to kopano_server
* adapt extrahosts for ip command on ubuntu 18.04
* add documentation

Signed-off-by: Felix Bartels <felix@host-consultants.de>

core/defaultconfigs/grapi.py

@@ -0,0 +1,5 @@
+import os
+import kcconf
+
+# Override configs from environment variables
+kcconf.configkopano(kcconf.parseenvironmentvariables(r"/etc/kopano/"))

core/defaultconfigs/kapid.py

@@ -0,0 +1,18 @@
+import os
+import kcconf
+
+# Component specific configurations
+kcconf.configkopano({
+    r"/etc/kopano/kapid.cfg":
+    {
+        'log_level': "info",
+        'listen': "0.0.0.0:8039",
+        'DEFAULT_PLUGIN_PUBS_SECRET_KEY_FILE': "/kopano/ssl/kapid-pubs-secret.key",
+        'plugin_kvs_db_datasource': "/kopano/data/kapi-kvs/kvs.db",
+        'plugin_grapi_socket_path': "/var/run/kopano/grapi"
+
+    }
+})
+
+# Override configs from environment variables
+kcconf.configkopano(kcconf.parseenvironmentvariables(r"/etc/kopano/"))