Add comment to projects with former independent model

Some projects moved back to cycle with series from independent release
model, so that to be able to cut stable branches and release fixes per
branch. To avoid accidental 'independent' releases this patch adds a
comment in their old yaml under deliverables/_independent to call
reviewers attention.

Change-Id: I397f6c0ff1f1aa67506043dfcd5f330b993c34b9

deliverables/_independent/oslo.concurrency.yaml

@@ -30,3 +30,5 @@ releases:
     projects:
       - repo: openstack/oslo.concurrency
         hash: 01cf2ffdf48c21f886b2aa3f766be5d268248c18
+# NOTE(elod.illes): This deliverable moved back to
+# cycle-with-intermediary release model

deliverables/_independent/oslo.i18n.yaml

@@ -10,3 +10,5 @@ releases:
     projects:
       - repo: openstack/oslo.i18n
         hash: b031d17b2ffb38a3354dd15dd8a5ac7ca61b82e7
+# NOTE(elod.illes): This deliverable moved back to
+# cycle-with-intermediary release model

deliverables/_independent/oslo.log.yaml

@@ -38,3 +38,5 @@ releases:
     projects:
       - repo: openstack/oslo.log
         hash: de615d9370681a2834cebe88acfa81b919da340c
+# NOTE(elod.illes): This deliverable moved back to
+# cycle-with-intermediary release model

deliverables/_independent/oslo.reports.yaml

@@ -14,3 +14,5 @@ releases:
     projects:
       - repo: openstack/oslo.reports
         hash: 3a1157f1e50924bb6bb49676c7a89f5f8f17b295
+# NOTE(elod.illes): This deliverable moved back to
+# cycle-with-intermediary release model

deliverables/_independent/oslo.rootwrap.yaml

@@ -14,3 +14,5 @@ releases:
     projects:
       - repo: openstack/oslo.rootwrap
         hash: 1b1b960d0d6b0ddf63c5b0f9c6aa7c10a1914073
+# NOTE(elod.illes): This deliverable moved back to
+# cycle-with-intermediary release model

deliverables/_independent/taskflow.yaml

@@ -34,3 +34,5 @@ releases:
     projects:
       - repo: openstack/taskflow
         hash: 6dfc18013a2570c839828d6d879a9ab6a4964d91
+# NOTE(elod.illes): This deliverable moved back to
+# cycle-with-intermediary release model