Since TMT 1.19 plans can be imported remotely. Since we are
mostly dealing with 99% copy-paste plans in individual packages
it makes more sense to deduplicate them into this repository.
When doing a fresh mock build (=~ no cached build root) the test can take
a bit over 5 minutes. Since 5 minutes is the default timeout, bump it
to 10 minutes for these tests.
Since rubygem packages require little to no compilation, the builds
are quite fast overall, so only 10m is reasonable for the package set
tested for the rubygem-cucumber stack.
This might require further adjustments as runtime of the test is also
affected by network speed, available CPU power, how long the
compilation/build takes, how long do the tests run, etc...
