Merge ~sylvain-pineau/checkbox-core-snap:add-apache2-utils into checkbox-core-snap:master

[Sylvain Pineau]

A prerequisite to fix the docker registry test, the call to htpasswd must now be done outside the container since the binary got removed in the most recent version of the container.

[Jonathan Cave (jocave)]

+1, looks fine

review: Approve

diff --git a/snap/snapcraft.yaml b/snap/snapcraft.yaml
index bf99eff..8a04a6d 100644
--- a/snap/snapcraft.yaml
+++ b/snap/snapcraft.yaml
@@ -326,6 +326,8 @@ parts:
     source-depth: 1
     plugin: python
     source: git://git.launchpad.net/plainbox-provider-docker
+    stage-packages:
+      - apache2-utils
     after: [plainbox-provider-ipdt]
     override-build: |
       provider_path=""