Add back the missing properties and required fields

<xml-element java-attribute="cloudExtraInfo" name="cloud-extra-info" type="java.lang.String">
<xml-properties>
<xml-property name="description" value="ESR inputs extra information about the VIM or Cloud which will be decoded by MultiVIM." />
</xml-properties>
</xml-element>
<xml-element java-attribute="cloudEpaCaps" name="cloud-epa-caps" type="java.lang.String">
<xml-properties>
<xml-property name="description" value="MultiVIM will discover and expose EPA capabilities." />
</xml-properties>
</xml-element>