test: Four fixes for RHEL for Edge tests

1. Remove ansible-blocking-io.py workaround. It's not required.
2. Variable should be PROD_REPO_URL, not STAGE_REPO_URL in
ostree-raw-image.sh
3. Use --reboot in rpm-ostree install to reboot VM instead of
a reboot ansible task
4. Wait until config file serviceinfo_api_server.yml exists, to
avoid file not available to use flaky issue

test/cases/ostree.sh

@@ -528,7 +528,7 @@ sudo mv boot.iso /var/lib/libvirt/images
 LOCAL_BOOT_LOCATION="/var/lib/libvirt/images/boot.iso"
 
 # Workaround to fix issue https://github.com/osbuild/osbuild-composer/issues/3216
-if [[ "${ID}-${VERSION_ID}" == "fedora-37" ]]; then
+if [[ "${ID}" == "fedora" ]]; then
     location_arg="${LOCAL_BOOT_LOCATION}",initrd=images/pxeboot/initrd.img,kernel=images/pxeboot/vmlinuz
 else
     location_arg="${LOCAL_BOOT_LOCATION}"
@@ -742,10 +742,6 @@ ansible_private_key_file=${SSH_KEY}
 ansible_ssh_common_args="-o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null"
 EOF
 
-# Fix ansible error https://github.com/osbuild/osbuild-composer/issues/3309
-greenprint "fix stdio file non-blocking issue"
-sudo /usr/libexec/osbuild-composer-test/ansible-blocking-io.py
-
 # Test IoT/Edge OS
 sudo ansible-playbook -v -i "${TEMPDIR}"/inventory \
     -e image_type=${IMAGE_TYPE} \