Cannot upgrade to Satellite 6.16 when using a CA with SHA1 as Signature Algorithm

Issue

• When upgrading to Satellite 6.16, the CA used to sign the certificates used by Satellite API cannot use SHA1 as Signature Algorithm. When such CA is used, the error below is generated during satellite-installer execution:

  /Stage[main]/Foreman_proxy::Register/Foreman_smartproxy[satellite.example.com]
    Adding autorequire relationship with Anchor[foreman::service]
    Adding autorequire relationship with Anchor[foreman::providers::oauth]
    Starting to evaluate the resource (3113 of 3141)
    Could not evaluate: Exception SSL_connect returned=1 errno=0 peeraddr=192.168.110.100:443 state=error: 
  certificate verify failed (CA signature digest algorithm too weak) in get request to: 
  https://satellite.example.com/api/v2/smart_proxies?search=name%3D%22satellite.example.com%22
  Wrapped exception:
  SSL_connect returned=1 errno=0 peeraddr=192.168.110.100:443 state=error: certificate verify failed (CA signature 
  digest algorithm too weak)
    Evaluated in 0.00 seconds
  Foreman_smartproxy[satellite.example.com](provider=rest_v3)
    Making get request to https://satellite.example.com/api/v2/smart_proxies? 
  search=name%3D%22satellite.example.com%22