Move to standardised ROOT.war file name
Move to standardised ROOT.war file name

Signed-off-by: pavittr <d0bf7a2cad222deb9ae2c588e240de3d87c6e782@uk.ibm.com>

AndyGee/microprofile-conference,katheris/microprofile-conference,karianna/microprofile-conference,karianna/microprofile-conference,katheris/microprofile-conference,karianna/microprofile-conference,microprofile/microprofile-conference,katheris/microprofile-conference,microprofile/microprofile-conference,AndyGee/microprofile-conference,microprofile/microprofile-conference,AndyGee/microprofile-conference,microprofile/microprofile-conference,katheris/microprofile-conference,microprofile/microprofile-conference,karianna/microprofile-conference,karianna/microprofile-conference,AndyGee/microprofile-conference,katheris/microprofile-conference,AndyGee/microprofile-conference