Columnstore badly failed on 32bit. The way Debian triggers
somehow doesn't detect the amd64 in the architecture of columnstore
so we explicitly disable it to prevent failures on x86_32.

The architecture from the control file is sufficient to not build
of arm64 and other unsupported achitectures so we don't need to
disable columnstore by default.

The logic around not building columnstore on Travis/Gitlab ci
can be preserved with a autobake-deb.sh restructure.