Merge ~ines-almeida/launchpad:add-missing-package-to-ppa-publisher into launchpad:master

[Ines Almeida]

Add missing 'procmail' package to PPA publisher (and rework comment that goes with it)

[Jürgen Gmach (jugmac00)]

review: Approve

diff --git a/charm/launchpad-copy-archive-publisher/layer.yaml b/charm/launchpad-copy-archive-publisher/layer.yaml
index 656e2fa..b43cab1 100644
--- a/charm/launchpad-copy-archive-publisher/layer.yaml
+++ b/charm/launchpad-copy-archive-publisher/layer.yaml
@@ -7,7 +7,7 @@ options:
   apt:
     packages:
       - launchpad-soyuz-dependencies
-      - procmail # Needed for the 'lockfile' command.
+      - procmail # Needed only for the 'lockfile' command.
   ols-pg:
     databases:
       db:
diff --git a/charm/launchpad-ppa-publisher/layer.yaml b/charm/launchpad-ppa-publisher/layer.yaml
index 481ad8a..a72c108 100644
--- a/charm/launchpad-ppa-publisher/layer.yaml
+++ b/charm/launchpad-ppa-publisher/layer.yaml
@@ -8,6 +8,7 @@ options:
     packages:
       - launchpad-soyuz-dependencies
       - libapache2-mod-wsgi-py3
+      - procmail # Needed only for the 'lockfile' command.
   ols-pg:
     databases:
       db:
diff --git a/charm/launchpad-scripts/layer.yaml b/charm/launchpad-scripts/layer.yaml
index 226ad84..c0312b0 100644
--- a/charm/launchpad-scripts/layer.yaml
+++ b/charm/launchpad-scripts/layer.yaml
@@ -5,7 +5,7 @@ repo: https://git.launchpad.net/launchpad
 options:
   apt:
     packages:
-      - procmail # Needed for the 'lockfile' command.
+      - procmail # Needed only for the 'lockfile' command.
   ols-pg:
     databases:
       db: