Bug#844768: ruby-berkshelf-api-client FTBFS in stretch due to missing berkshelf-api

[Adrian Bunk]

Source: ruby-berkshelf-api-client
Version: 2.0.2-1
Severity: serious
Tags: stretch
Control: block -1 by 841704

ruby-berkshelf-api-client build-depends on berkshelf-api,
which is not in testing due to #841704