CRL configmap is limited by 1MB max, not allowing for multiple public CRLS.

CRL list is capped at 1MB due to configmap max size. If multiple public CRLs are needed for ingress controller the CRL pem file will be over 1MB. 

100%

1. Create CRL configmap with the following distribution points: 

         Issuer: C=US, O=DigiCert Inc, CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1
         Subject: SOME SIGNED CERT            X509v3 CRL Distribution Points: 
                Full Name:
                  URI:http://crl3.digicert.com/DigiCertGlobalG2TLSRSASHA2562020CA1-2.cr  
       
      
# curl -o DigiCertGlobalG2TLSRSASHA2562020CA1-2.crl http://crl3.digicert.com/DigiCertGlobalG2TLSRSASHA2562020CA1-2.crl
# openssl crl -in  DigiCertGlobalG2TLSRSASHA2562020CA1-2.crl -inform DER -out  DigiCertGlobalG2TLSRSASHA2562020CA1-2.pem 
# du -bsh DigiCertGlobalG2TLSRSASHA2562020CA1-2.pem 
604K    DigiCertGlobalG2TLSRSASHA2562020CA1-2.pem


I still need to find more intermediate CRLS to grow this. 

2023-01-25T13:45:01.443Z ERROR operator.init controller/controller.go:273 Reconciler error {"controller": "crl", "object": {"name":"custom","namespace":"openshift-ingress-operator"}, "namespace": "openshift-ingress-operator", "name": "custom", "reconcileID": "d49d9b96-d509-4562-b3d9-d4fc315226c0", "error": "failed to ensure client CA CRL configmap for ingresscontroller openshift-ingress-operator/custom: failed to update configmap: ConfigMap \"router-client-ca-crl-custom\" is invalid: []: Too long: must have at most 1048576 bytes"}

First be able to create a configmap where data only accounted to the 1MB max (see additional info below for more details), second some way to compress or allow a large CRL list that would be larger than 1MB

Only using this CRL and it being only 600K still causes issue and it could be due to  the `last-applied-configuration` annotation on the configmap. This is added since we do an apply operation (update) on the configmap. I am not sure if this is counting towards the 1MB max. 

https://github.com/openshift/cluster-ingress-operator/blob/release-4.10/pkg/operator/controller/crl/crl_configmap.go#L295 

Not sure if we could just replace the configmap.