With the recent improvements to the CI infrastructure we are seeing
relatively fast build times for most of our jobs. The exception to this
rule are the relatively-larger blueprint build jobs.

Assign the set of tags: "bitbake-friendly", large-disk (legacy) and the
new "heavy" tag. The tag will route the job to a runner with
significantly more resources. This shoudl help even out the total build
time.

Signed-off-by: Zygmunt Krynicki <zygmunt.krynicki@huawei.com>