Suppress API error for RefDatabase.hasFastTipsWithSha1()

This method was added in stable-5.6 after 5.6 RC1 was tagged. It's shown
as an API error when using 5.6.0 RC1 as the API baseline for master.
This suppression can be removed when 5.6 is released which will serve as
the API baseline for 5.7.

Change-Id: Ic6359fe59ed2d2a9431583b0854ec86bbac76880
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

org.eclipse.jgit/.settings/.api_filters

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<component id="org.eclipse.jgit" version="2">
+    <resource path="src/org/eclipse/jgit/lib/RefDatabase.java" type="org.eclipse.jgit.lib.RefDatabase">
+        <filter id="1141899266">
+            <message_arguments>
+                <message_argument value="5.6"/>
+                <message_argument value="5.7"/>
+                <message_argument value="hasFastTipsWithSha1()"/>
+            </message_arguments>
+        </filter>
+    </resource>
+</component>