adding sort function before the data are generated to yaml

otc_metadata/templates/tox.ini.j2

@@ -24,9 +24,7 @@ commands = {posargs}
 # This env is invoked in the periodic pipeline and is therefore responsible to
 # build all relevant docs at once.
 [testenv:docs]
-deps =
+deps = -r{toxinidir}/doc/requirements.txt
-  -r{toxinidir}/doc/requirements.txt
-  -c https://raw.githubusercontent.com/opentelekomcloud-docs-swiss/docs-constraints/main/constraints.txt
 allowlist_externals =
   mkdir
   cp
@@ -42,7 +40,7 @@ commands =
 {%- endfor %}
 
 [testenv:docs-pdf]
-deps = {[testenv:docs]deps}
+deps = -r{toxinidir}/doc/requirements.txt
 allowlist_externals =
   rm
   mkdir
@@ -61,7 +59,7 @@ commands =
 {% set loc = doc.rst_location | replace('/source', '') %}
 # HTML version
 [testenv:{{ doc.type }}]
-deps = {[testenv:docs]deps}
+deps = -r{toxinidir}/doc/requirements.txt
 allowlist_externals =
   cp
   mkdir
@@ -80,7 +78,7 @@ commands =
 
 # Json version (for search)
 [testenv:json-{{ doc.type }}]
-deps = {[testenv:docs]deps}
+deps = -r{toxinidir}/doc/requirements.txt
 allowlist_externals =
   cp
   mkdir
@@ -104,7 +102,7 @@ commands =
 {% if doc.pdf_name -%}
 # PDF version
 [testenv:{{ doc.type }}-pdf-docs]
-deps = {[testenv:docs]deps}
+deps = -r{toxinidir}/doc/requirements.txt
 allowlist_externals =
   rm
   mkdir