Flattened Aggregate Command Names are not Compliant with XTCE

[lorenzo-gomez-windhover]

A "." is added when command aggregates are flattened(this was done because YAMCS did not support aggregate commands at the time). This is not compliant with XTCE 1.2.

<simpleType name="NameType">
<annotation>
<documentation>Defines a name where all characters are allowed except '.', '[', ']', ':', ' ', and '/'. See NameDescriptionType.</documentation>
</annotation>
<restriction base="normalizedString">
<pattern value="[^./:\[\] ]+"/>
</restriction>
</simpleType>