Gerrit: Support REST query for HTTP servers

Change-Id: Icc164b9d84abe4efc34deaa5d19dca167fdb14e1
Reviewed-by: Tobias Hunger <tobias.hunger@qt.io>
Reviewed-by: André Hartmann <aha_1980@gmx.de>

src/plugins/git/gerrit/gerritmodel.h

@@ -57,6 +57,7 @@ public:
     bool hasApproval(const GerritUser &user) const;
     int approvalLevel() const;
 
+    QString url;
     QString ref;
     int patchSetNumber;
     QList<GerritApproval> approvals;