xmlstarlet to added apache mssl spi in keycloak xml

gistfile1.txt

 # set alias xl='xmlstarlet'
 xl ed -L -u '//spi[@name="x509cert-lookup"]/default-provider' -v "apache" test.xml
 xl ed -L -u '//spi[@name="x509cert-lookup"]/provider[@name="default"]/@name' -v "apache" test.xml
 xl ed -L -s '//spi[@name="x509cert-lookup"]/provider[@name="apache"]' -t elem -n "properties" test.xml
 xl ed -L -s '//spi[@name="x509cert-lookup"]/provider[@name="apache"]/properties' -t elem -n "property" test.xml
 xl ed -L -i '(//spi[@name="x509cert-lookup"]/provider[@name="apache"]/properties/property)[last()]' -t attr -n "name" -v "sslClientCert" test.xml
 xl ed -L -i '(//spi[@name="x509cert-lookup"]/provider[@name="apache"]/properties/property)[last()]' -t attr -n "value" -v "ssl-client-cert" test.xml
 xl ed -L -s '//spi[@name="x509cert-lookup"]/provider[@name="apache"]/properties' -t elem -n "property" test.xml
 xl ed -L -i '(//spi[@name="x509cert-lookup"]/provider[@name="apache"]/properties/property)[last()]' -t attr -n "name" -v "sslCertChainPrefix" test.xml
 xl ed -L -i '(//spi[@name="x509cert-lookup"]/provider[@name="apache"]/properties/property)[last()]' -t attr -n "value" -v "USELESS" test.xml
 xl ed -L -s '//spi[@name="x509cert-lookup"]/provider[@name="apache"]/properties' -t elem -n "property" test.xml
 xl ed -L -i '(//spi[@name="x509cert-lookup"]/provider[@name="apache"]/properties/property)[last()]' -t attr -n "name" -v "certificateChainLength" test.xml
 xl ed -L -i '(//spi[@name="x509cert-lookup"]/provider[@name="apache"]/properties/property)[last()]' -t attr -n "value" -v "0" test.xml