Downstream: Fix attributes problem

Attributes were being dumped at the beginning of documents like this:

```

Ceph: Red Hat Ceph Storage
CephCluster: Red Hat Ceph Storage
CephVernum: 7
MessageBus: AMQ-Interconnect
```

This was because wee were passing an attributes file to the processor
instead of an asciidoctor file with the attributes.

Upon inspection we don't even need to pass these attributes, because the
source documents already use the include directive to include their
specific attribute files, which in some cases is different from the
global one we were previously using.

Example:

```
include::assemblies/common/global/adoption-attributes.adoc[]
```

In this patch we stop passing the `--attributes-file` argument to the
`rhoso_adoc_docs_to_text.py` script.

We also remove the `RHOSO_DOCS_ATTRIBUTES_FILE_URL` environmental
variable that is no longer needed.

Author: Akrog

Containerfile

@@ -36,7 +36,6 @@ ARG NUM_WORKERS=1
 ARG RHOSO_CA_CERT_URL=""
 ARG RHOSO_DOCS_GIT_URL=""
 ARG RHOSO_DOCS_GIT_BRANCH=""
-ARG RHOSO_DOCS_ATTRIBUTES_FILE_URL=""
 ARG RHOSO_RELNOTES_GIT_URL=""
 ARG RHOSO_RELNOTES_GIT_BRANCH=""
 ARG RHOSO_EXCLUDE_TITLES=""
@@ -46,7 +45,6 @@ ENV NUM_WORKERS=$NUM_WORKERS
 ENV RHOSO_CA_CERT_URL=$RHOSO_CA_CERT_URL
 ENV RHOSO_DOCS_GIT_URL=$RHOSO_DOCS_GIT_URL
 ENV RHOSO_DOCS_GIT_BRANCH=$RHOSO_DOCS_GIT_BRANCH
-ENV RHOSO_DOCS_ATTRIBUTES_FILE_URL=$RHOSO_DOCS_ATTRIBUTES_FILE_URL
 ENV RHOSO_RELNOTES_GIT_URL=$RHOSO_RELNOTES_GIT_URL
 ENV RHOSO_RELNOTES_GIT_BRANCH=$RHOSO_RELNOTES_GIT_BRANCH
 

Makefile

@@ -8,7 +8,6 @@ PRUNE_PATHS                    ?= ""
 INDEX_NAME                     ?= os-docs-$(OS_VERSION)
 RHOSO_DOCS_GIT_URL             ?= ""
 RHOSO_DOCS_GIT_BRANCH          ?= ""
-RHOSO_DOCS_ATTRIBUTES_FILE_URL ?= ""
 RHOSO_RELNOTES_GIT_URL         ?= ""
 RHOSO_RELNOTES_GIT_BRANCH      ?= ""
 RHOSO_CA_CERT_URL              ?= ""
@@ -43,7 +42,6 @@ build-image-os: ## Build a openstack rag-content container image
 	--build-arg PRUNE_PATHS=$(PRUNE_PATHS) \
 	--build-arg RHOSO_DOCS_GIT_URL=$(RHOSO_DOCS_GIT_URL) \
 	--build-arg RHOSO_DOCS_GIT_BRANCH=$(RHOSO_DOCS_GIT_BRANCH) \
-	--build-arg RHOSO_DOCS_ATTRIBUTES_FILE_URL=$(RHOSO_DOCS_ATTRIBUTES_FILE_URL) \
 	--build-arg RHOSO_RELNOTES_GIT_URL=$(RHOSO_RELNOTES_GIT_URL) \
 	--build-arg RHOSO_RELNOTES_GIT_BRANCH=$(RHOSO_RELNOTES_GIT_BRANCH) \
 	--build-arg RHOSO_CA_CERT_URL=$(RHOSO_CA_CERT_URL) \

scripts/get_rhoso_plaintext_docs.sh

@@ -24,10 +24,6 @@ RHOSO_DOCS_GIT_URL=${RHOSO_DOCS_GIT_URL:-}
 # Branch to checkout for RHOSO documentation repository
 RHOSO_DOCS_GIT_BRANCH=${RHOSO_DOCS_GIT_BRANCH:-rhoso180-antelope}
 
-# URL YAML file which containes RHOSO docs attributes.
-RHOSO_DOCS_ATTRIBUTES_FILE_URL=${RHOSO_DOCS_ATTRIBUTES_FILE_URL:-}
-[ -z "${RHOSO_DOCS_ATTRIBUTES_FILE_URL}" ] && echo "Err: Mising RHOSO_DOCS_ATTRIBUTES_FILE_URL!" && exit 1
-
 # URL of Git repository for RHOSO release notes
 RHOSO_RELNOTES_GIT_URL=${RHOSO_RELNOTES_GIT_URL:-}
 [ -z "${RHOSO_RELNOTES_GIT_URL}" ] && echo "Err: Mising RHOSO_RELNOTES_GIT_URL!" && exit 1
@@ -71,18 +67,17 @@ fi
 # Clone RHOSO documentation and generate vector database for it
 generate_text_docs_rhoso() {
     local rhoso_docs_folder="./rhoso_docs"
-    local attributes_file="attributes.yaml"
 
     if [ ! -d "${rhoso_docs_folder}" ]; then
         git_clone -b "${RHOSO_DOCS_GIT_BRANCH}" "${RHOSO_DOCS_GIT_URL}" "${rhoso_docs_folder}"
     fi
 
-    curl_download -o "${attributes_file}" "${RHOSO_DOCS_ATTRIBUTES_FILE_URL}"
-
+    # No need to pass a specific attributes file for the docs, because the
+    # .adoc files in our documentation already have the appropriate `include`
+    # directive for the attributes files.
     for subdir in "${rhoso_docs_folder}/titles" "${rhoso_docs_folder}"/doc-*; do
         python ./scripts/rhoso_adoc_docs_to_text.py \
             --input-dir "${subdir}" \
-            --attributes-file "${attributes_file}" \
             --output-dir "$OUTPUT_DIR_NAME/" \
             --exclude-titles "${RHOSO_EXCLUDE_TITLES[@]}" \
             --remap-titles "${RHOSO_REMAP_TITLES}"