Deprecated pass-unix-credentials() and added so-passcreds() (#106)

Deprecated pass-unix-credentials() and added so-passcreds()

Signed-off-by: Zsolt Gyulai (zgyulai) <[email protected]>

doc/_admin-guide/090_Global_options/000_Global_options.md

@@ -305,18 +305,9 @@ Starting with version 3.16, the default value of this option is -1, so
 {{ site.product.short_name }} does not change the ownership, unless explicitly
 configured to do so.
 
-## pass-unix-credentials()
+## pass-unix-credentials() (DEPRECATED)
 
-|  Accepted values:|   yes \| no|
-|Default:|           yes|
-
-*Description:* Enable {{ site.product.short_name }} to collect UNIX credential
-information (that is, the `PID`, user ID, and group of the sender process)
-for messages received using UNIX domain sockets. Available only in
-{{ site.product.name }} 3.7 and later. Note that collecting UNIX
-credential information from sockets in high-traffic environments can be
-resource intensive, therefore pass-unix-credentials() can be disabled
-globally, or separately for each source.
+The `pass-unix-credentials()` option has been deprecated in {{ site.product.short_name }} 3.35 and later versions. Use the `so-passcred()` option.
 
 {% include doc/admin-guide/options/perm.md %}
 
@@ -424,6 +415,15 @@ The following sub-options are available within the stats() option:
 
 **NOTE:** If a lower value is set to stats-max-dynamics() (or, any limiting value, if this option has not been configured before) and {{ site.product.short_name }} is restarted, the changes are only applied after stats-freq() time has passed. That is, the previously allocated dynamic clusters are only removed after this time.
 
+## so-passcred()
+
+|Accepted values:|   `yes`, `no`|
+|Default:        |         `yes`|
+
+*Description:* Enable {{ site.product.short_name }} to collect credential
+information (that is, the `PID`, user ID, and group of the sender process)
+for messages received using UNIX domain sockets.
+
 ## syslog-stats()
 
 |  Accepted values:|   yes, no, auto|