anaconda install failswith SSL: DH_KEY_TOO_SMALL

Issue

• RHEL 8 anaconda install fails with following in packaging.log despite using inst.nosslverify on kernel command line

  ERR dnf: Failed to download metadata for repo 'anaconda'
  ERR packaging: base repo (url/https://hostname.example.com/baseos/) not valid -- removing it
  ERR packaging: reason for repo removal: Failed to download metadata for repo 'anaconda'
  ERR packaging: Repo info download for https://hostname.example.com/baseos/ failed after 6 retries
  INF packaging: Error downloading '.treeinfo': HTTPSConnectionPool(host='hostname.example.com', port=443):
                 Max retries exceeded with url: /baseos/.treeinfo
                (Caused by SSLError(SSLError(1, '[SSL: DH_KEY_TOO_SMALL] dh key too small (_ssl.c:897)'),))
  INF packaging: Error downloading 'treeinfo': HTTPSConnectionPool(host='hostname.example.com', port=443):
                 Max retries exceeded with url: /baseos//treeinfo
                 (Caused by SSLError(SSLError(1, '[SSL: DH_KEY_TOO_SMALL] dh key too small (_ssl.c:897)'),))