release-1.4 chore: release notes single-sourcing script fixes and enhancements (#790)

* chore: release notes single-sourcing script fixes and enhancements

Signed-off-by: Fabrice Flore-Thébault <[email protected]>

* refreshed from Jira

Signed-off-by: Fabrice Flore-Thébault <[email protected]>

* not adding new content for the release

Signed-off-by: Fabrice Flore-Thébault <[email protected]>

---------

Signed-off-by: Fabrice Flore-Thébault <[email protected]>

Author: themr0c

assemblies/assembly-release-notes-breaking-changes.adoc

@@ -0,0 +1,7 @@
+:_content-type: REFERENCE
+[id="breaking-changes"]
+= Breaking changes
+
+This section lists breaking changes in {product} {product-version}.
+
+

assemblies/assembly-release-notes-new-features.adoc

@@ -1,11 +1,5 @@
-:_content-type: ASSEMBLY
+:_content-type: REFERENCE
 [id="deprecated-functionalities"]
 = Deprecated functionalities
 
 This section lists deprecated functionalities in {product} {product-version}.
-
-
-include::modules/release-notes/snip-deprecated-functionality-rhidp-1138.adoc[leveloffset=+1]
-
-
-

build/templates/assembly.adoc.jinja

@@ -0,0 +1,6 @@
+:_content-type: REFERENCE
+[id="fixed-issues"]
+= Fixed issues
+
+This section lists issues fixed in {product} {product-version}.
+

build/templates/snippet-security.adoc.jinja2

@@ -0,0 +1,8 @@
+:_content-type: REFERENCE
+[id="known-issues"]
+= Known issues
+
+This section lists known issues in {product} {product-version}.
+
+
+