Duplicate ignore mappings found in OS-to-OS platform.

[sanganinamrata]

Duplicate ignore mapping found for admin_role and admin_rule document_rules in opensource-to-opensource platform mapping files(map.xml).

        <document_rules>
            <ignore>
                <document>admin_role</document>
            </ignore>
            <ignore>
                <document>admin_rule</document>
            </ignore>
            <ignore>
                <document>admin_role</document>
            </ignore>
            <ignore>
                <document>admin_rule</document>
            </ignore>
</document_rules>
.
.
.
</source>```

Thank you :)

[victor-v-rad]

Thank you @sanganinamrata for fixing it in #553
internal ticket MAGETWO-93231 to process it