Fix unnecessary error messages in log when default['openstack']['apt']['components'] attribute is nil or empty. [1/1]

Fix unnecessary error messages in log when default['openstack']['apt']['components'] attribute is nil or empty.


 .../openstack-common/attributes/default.rb         |    3 ++-
 chef/cookbooks/openstack-common/recipes/default.rb |    4 ++--
 2 files changed, 4 insertions(+), 3 deletions(-)

Crowbar-Pull-ID: 8c9e97711bb27de6c8e942d5bd8a5e68d4dddb03

Crowbar-Release: development