Add documentation for the SSH 'test-submit type' command

Change-Id: I7fa8e722bd2dfda55882286f15ce62b7f8a78d68
Signed-off-by: Edwin Kempin <edwin.kempin@sap.com>

Documentation/cmd-index.txt

@@ -159,6 +159,9 @@ link:cmd-plugin-remove.html[gerrit plugin rm]::
 link:cmd-test-submit-rule.html[gerrit test-submit-rule]::
 	Test prolog submit rules.
 
+link:cmd-test-submit-type.html[gerrit test-submit type]::
+	Test prolog submit type.
+
 link:cmd-kill.html[kill]::
 	Kills a scheduled or running task.
 

Documentation/cmd-test-submit-type.txt

@@ -0,0 +1,53 @@
+gerrit test-submit type
+=======================
+
+NAME
+----
+gerrit test-submit type - Test prolog submit type with a chosen change.
+
+SYNOPSIS
+--------
+[verse]
+'ssh' -p <port> <host> 'gerrit test-submit type'
+  [-s]
+  [--no-filters]
+  CHANGE
+
+DESCRIPTION
+-----------
+Provides a way to test prolog submit type.
+
+OPTIONS
+-------
+-s::
+	Reads a rules.pl file from stdin instead of rules.pl in refs/meta/config.
+
+--no-filters::
+	Don't run the submit_type_filter/2 from the parent projects of the specified change.
+
+ACCESS
+------
+Can be used by anyone that has permission to read the specified change.
+
+EXAMPLES
+--------
+
+Test submit_type from stdin and return the submit type.
+====
+ cat rules.pl | ssh -p 29418 review.example.com gerrit test-submit type -s I78f2c6673db24e4e92ed32f604c960dc952437d9
+ "MERGE_IF_NECESSARY"
+====
+
+Test the active submit_type from the refs/meta/config branch, ignoring filters in the project parents.
+====
+ $ ssh -p 29418 review.example.com gerrit test-submit type I78f2c6673db24e4e92ed32f604c960dc952437d9 --no-filters
+ "MERGE_IF_NECESSARY"
+====
+
+SCRIPTING
+---------
+Can be used either interactively for testing new prolog submit type, or from a script to check the submit type of a change.
+
+GERRIT
+------
+Part of link:index.html[Gerrit Code Review]