CI: Use $ID instead of $NAME to identify the distribution

See https://src.fedoraproject.org/rpms/fedora-release/pull-request/402

NAME is defined as a presentation field, not an ID field,
see https://www.mankier.com/5/os-release

plan.fmf

@@ -6,10 +6,10 @@ discover:
     tests:
     - name: c9s_mockbuild
       path: /
-      test: NAME="CentOS Stream" VERSION_ID=9 tests/mocktest.sh pyproject-rpm-macros
+      test: ID=centos VERSION_ID=9 tests/mocktest.sh pyproject-rpm-macros
     - name: c10s_mockbuild
       path: /
-      test: NAME="CentOS Stream" VERSION_ID=10 tests/mocktest.sh pyproject-rpm-macros
+      test: ID=centos VERSION_ID=10 tests/mocktest.sh pyproject-rpm-macros
     - name: pytest
       path: /tests
       test: ./mocktest.sh python-pytest
@@ -111,10 +111,10 @@ discover:
       test: ./mocktest.sh config-settings-test
     - name: isort_c9s
       path: /tests
-      test: NAME="CentOS Stream" VERSION_ID=9 ./mocktest.sh python-isort
+      test: ID=centos VERSION_ID=9 ./mocktest.sh python-isort
     - name: isort_c10s
       path: /tests
-      test: NAME="CentOS Stream" VERSION_ID=10 ./mocktest.sh python-isort
+      test: ID=centos VERSION_ID=10 ./mocktest.sh python-isort
 prepare:
   - name: Install dependencies
     how: install

tests/mocktest.sh

@@ -1,21 +1,21 @@
 #!/usr/bin/bash -eux
-if [ -z "${VERSION_ID-}" ] && [ -z "${NAME-}" ]; then
+if [ -z "${VERSION_ID-}" ] && [ -z "${ID-}" ]; then
   . /etc/os-release
 fi
 
 version=$(echo "${VERSION_ID}" | cut -d. -f1)
 arch=$(rpm --eval '%{_arch}')
 
-case $NAME in
-  "Fedora Linux"|"Fedora")
-    if [ "${VARIANT_ID-}" == "eln" ]; then
+case $ID in
+  "fedora")
+  if [ "${VARIANT_ID-}" == "eln" ]; then
       version="eln"
     fi
     mock="fedora-${version}-${arch}"
     repos="local"
     ;;
 
-  "CentOS Stream"|"Red Hat Enterprise Linux")
+  "centos"|"rhel")
     case $version in
       9)
         mock="centos-stream+epel-next-${version}-${arch}"