(DOCSP-17775) Adds missing mcli variables for output type and mongosh path (#599)

Author: sarahsimpers

source/configure/environment-variables.txt

@@ -80,6 +80,33 @@ The {+mcli+} supports the following environment variables:
           * - ``ops-manager``
             - |mms-full|
 
+   * - ``MCLI_OUTPUT``
+     - Sets the output fields and format. Valid values are:
+       
+       .. list-table::
+          :header-rows: 1
+          :widths: 40 60
+                 
+          * - Value
+            - Output Format
+       
+          * - | Empty
+              | *default*
+            - Human-readable output that includes all fields that {+mcli+} returns.
+       
+          * - ``json``
+            - JSON output that includes all fields that {+mcli+} returns.
+
+          * - ``json-path``
+            - JSON output that includes the :doc:`fields that you specify </reference/json-path>`.
+                 
+          * - ``go-template``
+            - Custom-formatted output that includes the :doc:`fields 
+              that you specify in a Go template </configure/go-template-output>`.
+       
+   * - ``MCLI_MONGOSH_PATH``
+     - The full path on your local system to the |mongo| shell.
+        
    * - | ``MCLI_OPS_MANAGER_CA_CERTIFICATE``
        | *Ops Manager only*
      - If applicable, the full path on your local