matrix: Update homeserver config from sample_config.yaml

roles/matrix/files/log_config.yaml

 version: 1
 
 formatters:
+  fmt:
+    format: '%(asctime)s - %(name)s - %(lineno)d - %(levelname)s - %(request)s- %(message)s'
   journal_fmt:
     format: '%(name)s: [%(request)s] %(message)s'
 
 filters:
   context:
-    (): synapse.util.logcontext.LoggingContextFilter
+    (): synapse.logging.context.LoggingContextFilter
     request: ""
 
 handlers:
+  # example output to console
+  console:
+    class: logging.StreamHandler
+    formatter: fmt
+    filters: [context]
+
+  # output to systemd journal
   journal:
     class: systemd.journal.JournalHandler
     formatter: journal_fmt
@@ -17,7 +26,19 @@ handlers:
     SYSLOG_IDENTIFIER: synapse
 
 root:
-  level: ERROR
-  handlers: [journal]
+    level: ERROR
+    handlers: [journal]
+
+loggers:
+    synapse:
+        level: ERROR
+
+    synapse.storage.SQL:
+        # beware: increasing this to DEBUG will make synapse log sensitive
+        # information such as access tokens.
+        level: ERROR
 
-disable_existing_loggers: False
+    # example of enabling debugging for a component:
+    #
+    # synapse.federation.transport.server:
+    #    level: DEBUG

roles/matrix/templates/homeserver.yaml.j2

-# vim:ft=yaml
+# vim:ft=yaml sw=2 et:
 
 ## Server ##
 
@@ -779,6 +779,17 @@ url_preview_ip_range_blacklist:
 #  renew_at: 1w
 #  renew_email_subject: "Renew your %(app)s account"
 
+# Time that a user's session remains valid for, after they log in.
+#
+# Note that this is not currently compatible with guest logins.
+#
+# Note also that this is calculated at login time: changes are not applied
+# retrospectively to users who have already logged in.
+#
+# By default, this is infinite.
+#
+#session_lifetime: 24h
+
 # The user must provide all of the below types of 3PID when registering.
 #
 #registrations_require_3pid:
@@ -1387,3 +1398,27 @@ password_config:
 #  module: "my_custom_project.SuperRulesSet"
 #  config:
 #    example_option: 'things'
+
+
+## Opentracing ##
+
+# These settings enable opentracing, which implements distributed tracing.
+# This allows you to observe the causal chains of events across servers
+# including requests, key lookups etc., across any server running
+# synapse or any other other services which supports opentracing
+# (specifically those implemented with Jaeger).
+#
+opentracing:
+    # tracing is disabled by default. Uncomment the following line to enable it.
+    #
+    #enabled: true
+
+    # The list of homeservers we wish to send and receive span contexts and span baggage.
+    # See docs/opentracing.rst
+    # This is a list of regexes which are matched against the server_name of the
+    # homeserver.
+    #
+    # By defult, it is empty, so no servers are matched.
+    #
+    #homeserver_whitelist:
+    #  - ".*"