[releng] Update references to legacy model file extension

Change-Id: I5aa8a6bc7a60d0dc80df3271c170b9e931818ae3
Signed-off-by: Sandu Postaru <sandu.postaru@thalesgroup.com>

plugins/org.polarsys.capella.vp.requirements.design/description/CapellaRequirements.odesign

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <description:Group xmi:version="2.0" xmlns:xmi="http://www.omg.org/XMI" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:description="http://www.eclipse.org/sirius/description/1.1.0" xmlns:description_1="http://www.eclipse.org/sirius/diagram/description/1.1.0" xmlns:description_2="http://www.eclipse.org/sirius/diagram/sequence/description/2.0.0" xmlns:style="http://www.eclipse.org/sirius/diagram/description/style/1.1.0" xmlns:tool="http://www.eclipse.org/sirius/diagram/description/tool/1.1.0" xmlns:tool_1="http://www.eclipse.org/sirius/description/tool/1.1.0" name="CapellaRequirements" version="12.0.0.2017041100">
-  <ownedViewpoints name="CapellaRequirements_ID" label="CapellaRequirements" modelFileExtension="capellarequirements melodymodeller">
+  <ownedViewpoints name="CapellaRequirements_ID" label="CapellaRequirements" modelFileExtension="capellarequirements capella">
     <ownedRepresentationExtensions xsi:type="description_1:DiagramExtensionDescription" name="CapellaViewpoints" viewpointURI="viewpoint:/org.polarsys.capella.core.sirius.analysis/.*" representationName=".*">
       <layers name="ReqVP_Requirements_Layer" label="Requirements" activeByDefault="true">
         <edgeMappings name="ReqVP_OutgoingRelation" deletionDescription="//@ownedViewpoints[name='CapellaRequirements_ID']/@ownedRepresentationExtensions[name='CapellaViewpoints']/@layers[name='ReqVP_Requirements_Layer']/@toolSections.0/@ownedTools[name='ReqVP_Delete']" synchronizationLock="true" targetMapping="//@ownedViewpoints[name='CapellaRequirements_ID']/@ownedRepresentationExtensions[name='CapellaViewpoints']/@layers[name='ReqVP_Requirements_Layer']/@containerMappings[name='ReqVP_Requirement']" targetFinderExpression="feature:target" sourceFinderExpression="service:findOutgoingRelationSource()" domainClass="CapellaOutgoingRelation" useDomainElement="true">