Updating the Red Hat Satellite server fails with error:[Errno 14] curl#60 - "Peer's certificate issuer has been marked as not trusted by the user."

Issue

• The command yum update on the Satellite server fails with Peer's certificate issuer has been marked as not trusted by the user.

  * NSS error -8172 (SEC_ERROR_UNTRUSTED_ISSUER)
  * Peer's certificate issuer has been marked as not trusted by the user.
  * Closing connection 8
  2018-03-06 06:03:34,100 exception: [Errno 14] curl#60 - "Peer's certificate issuer has been marked as not trusted by the user."
  2018-03-06 06:03:34,100 calling callback: (<bound method YumBaseCli.failureReport of <cli.YumBaseCli object at 0x7f8573223b10>>, (), {})
  https://cdn.redhat.com/content/dist/rhel/server/7/7Server/x86_64/os/repodata/repomd.xml: [Errno 14] curl#60 - "Peer's certificate issuer has been marked as not trusted by the user."
  Trying other mirror.
  It was impossible to connect to the Red Hat servers.
  This could mean a connectivity issue in your environment, such as the requirement to configure a proxy,
  or a transparent proxy that tampers with TLS security, or an incorrect system clock.
  Please collect information about the specific failure that occurs in your environment,
  using the instructions in: https://access.redhat.com/solutions/1527033 and open a ticket with Red Hat Support.
  
  2018-03-06 06:03:34,100 MIRROR: failed