TeamCity XML configs: replace CloudImage id for source-id

tc-cloud-image-id-from-source-id.xslt

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:output omit-xml-declaration="yes" indent="no"/>

  <xsl:template match="node()|@*">
    <xsl:copy>
      <xsl:apply-templates select="node()|@*"/>
    </xsl:copy>
  </xsl:template>

  <xsl:template match="extension[@type='CloudImage']/@id">
    <xsl:attribute name="id">
      <xsl:value-of select="parent::extension/parameters/param[@name='source-id']/@value"/>
    </xsl:attribute>
  </xsl:template>
</xsl:stylesheet>