[yocto] [layerindex-web][PATCH 6/7] utils: fix missing dependency logic in _add_dependency()

[Paul Eggleton]

* If a missing dependency is not required, show a warning instead of an
  error
* If logger isn't specified we still need to skip to the next item, so
  move the continue statement out of the conditional block. (In practice
  I don't think this function is currently called anywhere in the code
  without a logger specified, but let's fix it anyway).

Signed-off-by: Paul Eggleton <paul.eggleton at linux.intel.com>
---
 layerindex/utils.py | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/layerindex/utils.py b/layerindex/utils.py
index f8c5fd45..8f652da7 100644
--- a/layerindex/utils.py
+++ b/layerindex/utils.py
@@ -140,8 +140,11 @@ def _add_dependency(var, name, layerbranch, config_data, logger=None, required=T
         # No layer found.
         if not dep_layer:
             if logger:
-                logger.error('Cannot resolve %s %s (version %s) for %s' % (name, dep, ver_str, layer_name))
-                continue
+                if required:
+                    logger.error('Cannot resolve %s %s (version %s) for %s' % (name, dep, ver_str, layer_name))
+                else:
+                    logger.warning('Cannot resolve %s %s (version %s) for %s' % (name, dep, ver_str, layer_name))
+            continue
 
         # Preparing to remove obsolete ones
         if need_remove:
-- 
2.17.1