completion: add git config advice completions

Add missing completions for git config advice:

* advice.amWorkDir
* advice.pushAlreadyExists
* advice.pushFetchFirst
* advice.pushNeedsForce
* advice.pushNonFFCurrent
* advice.pushNonFFMatching
* advice.pushUpdateRejected
* advice.rmHints
* advice.statusUoption

Remove completion for git config advice.pushNonFastForward,
since it was renamed to pushUpdateRejected in 1184564eac.
The config still works, but is no longer part of the documentation.

Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

contrib/completion/git-completion.bash

@@ -2335,12 +2335,20 @@ _git_config ()
 	esac
 	__gitcomp "
 		add.ignoreErrors
+		advice.amWorkDir
 		advice.commitBeforeMerge
 		advice.detachedHead
 		advice.implicitIdentity
-		advice.pushNonFastForward
+		advice.pushAlreadyExists
+		advice.pushFetchFirst
+		advice.pushNeedsForce
+		advice.pushNonFFCurrent
+		advice.pushNonFFMatching
+		advice.pushUpdateRejected
 		advice.resolveConflict
+		advice.rmHints
 		advice.statusHints
+		advice.statusUoption
 		alias.
 		am.keepcr
 		am.threeWay