[BUG] x509_v2 certificate_managed is passing newline stripped data to append_certs

Description
x509_v2 certificate_managed append_certs parameter is stripping newlines from PEM certificates.

When using the below state the minion will throw a invalid index error in salt/utils/x509.py:814 because the pems = split_pems(cert) is receiving PEM pillar data with its newlines replaced with spaces. On the master split_pems receives proper pillar data with the newlines included. But the minion seems to have newlines replaced with spaces.

For now as a workaround I've just changed the append_certs to run the pillar data into base64_encode which works.

Setup

  x509.certificate_managed:
    - name: /etc/pki/fqdn/public.crt.pem
    - ca_server: master.local
    - signing_policy: encipher
    - private_key: /etc/pki/fqdn/private.key.pem
    - CN: fqdn
    - days_valid: 90
    - days_remaining: 60
    - makedirs: True
    - dir_mode: 0700
    - mode: 0600
    - subjectAltName: 'DNS: fqdn'
    - encoding: pem
    - append_certs:
      - {{pillar['cacerts']['int_ca']}}
      - {{pillar['cacerts']['root_ca']}}

Versions Report

Salt Version:
          Salt: 3007.0
 
Python Version:
        Python: 3.12.3 (main, Apr 23 2024, 09:16:07) [GCC 13.2.1 20240417]
 
Dependency Versions:
          cffi: 1.16.0
      cherrypy: Not Installed
      dateutil: Not Installed
     docker-py: Not Installed
         gitdb: Not Installed
     gitpython: Not Installed
        Jinja2: 3.1.3
       libgit2: Not Installed
  looseversion: 1.3.0
      M2Crypto: 0.40.1
          Mako: Not Installed
       msgpack: 1.0.5
  msgpack-pure: Not Installed
  mysql-python: Not Installed
     packaging: 23.2
     pycparser: 2.22
      pycrypto: Not Installed
  pycryptodome: 3.12.0
        pygit2: Not Installed
  python-gnupg: Not Installed
        PyYAML: 6.0.1
         PyZMQ: 25.1.2
        relenv: Not Installed
         smmap: Not Installed
       timelib: Not Installed
       Tornado: 6.4
           ZMQ: 4.3.5
 
Salt Package Information:
  Package Type: Not Installed
 
System Versions:
          dist: arch  
        locale: utf-8
       machine: x86_64
       release: 6.5.11-8-pve
        system: Linux
       version: Arch Linux  

Both master and minion are Arch Linux on 3007.0

Start in salt/utils/x509.py around line 814 and trace x509.certificate_managed handling of append_certs and split_pems. Reproduce the provided state on the reported Salt 3007.0 setup, comparing the pillar data received by the master and minion. Done means PEM newlines remain intact on the minion and the invalid index error no longer occurs.