DOCSP-38473 doc Unsupported settings, net.unixDomainSocket (#174)

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- [DOCSP-38473](https://jira.mongodb.org/browse/DOCSP-38473)
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Author: kanchana-mongodb

source/includes/fact-unix-domain-socket-support.rst

@@ -0,0 +1,6 @@
+|onprem| doesn't support configuration and management of the MongoDB
+server :manual:`net.unixDomainSocket </reference/configuration-options>`
+options such as :setting:`net.unixDomainSocket.enabled`,
+:setting:`net.unixDomainSocket.pathPrefix`, and
+:setting:`net.unixDomainSocket.filePermissions` using the |onprem|
+automation configuration. 

source/reference/cluster-configuration-process-options.txt

@@ -11,21 +11,25 @@ The ``processes.<args>`` object in an
 specifies the configuration options for each MongoDB instance. The
 supported settings depend on the version of MongoDB.
 
-The ``processes.args2_6`` object accepts most MongoDB settings and parameters for MongoDB versions 2.6 and later. Format this object using |yaml|. To review examples of the MongoDB configuration |yaml|,
-see the :manual:`Configuration File Options </reference/configuration-options#file-format>`
+The ``processes.args2_6`` object accepts most MongoDB settings and
+parameters for MongoDB versions 2.6 and later. Format this object using
+|yaml|. To review examples of the MongoDB configuration |yaml|, see the
+:manual:`Configuration File Options </reference/configuration-options#file-format>` 
 in the MongoDB manual.
 
+.. important::
+
+   Specific security-related settings, such as LDAP settings, TLS 
+   settings related to the Certificate Authority, and Authentication 
+   settings, are managed at the project level and may be overridden 
+   upon import into Automation.
+
+.. include:: /includes/fact-unix-domain-socket-support.rst
+
 .. warning::
 
    Automation doesn't validate these MongoDB settings. If you provide 
    an incorrect value, it could result in issues, downtime, or both. 
    Upon import, Automation will reject deployments with unsupported 
    settings, such as :configexpansion:`__exec` and 
    :configexpansion:`__rest`.
-
-.. important::
-
-   Specific security-related settings, such as LDAP settings, TLS 
-   settings related to the Certificate Authority, and Authentication 
-   settings, are managed at the project level and may be overridden 
-   upon import into Automation.

source/reference/cluster-configuration.txt

@@ -26,6 +26,17 @@ Optional fields are marked as such.
 A field that takes a ``<number>`` as its value can take integers and
 floating point numbers.
 
+.. note:: 
+
+   .. include:: /includes/fact-unix-domain-socket-support.rst 
+
+   |onprem| automation doesn't validate the following MongoDB settings.
+   If you provide an incorrect value, it could result in issues, 
+   downtime, or both:
+
+   - :configexpansion:`__exec` 
+   - :configexpansion:`__rest`
+
 Configuration Version
 ---------------------