fix e2e tests

Author: pooknull

e2e-tests/tls-clusterissue-cert-manager/compare/certificate_some-name-ssl-internal.yml

@@ -45,7 +45,6 @@ spec:
     - '*.some-name-cfg.NAME_SPACE.svc.clusterset.local'
   duration: 2160h0m0s
   issuerRef:
-    group: cert-manager.io
     kind: ClusterIssuer
     name: some-name-NAME_SPACE-psmdb-issuer
   secretName: some-name-ssl-internal

e2e-tests/tls-clusterissue-cert-manager/compare/certificate_some-name-ssl.yml

@@ -45,7 +45,6 @@ spec:
     - '*.some-name-cfg.NAME_SPACE.svc.clusterset.local'
   duration: 2160h0m0s
   issuerRef:
-    group: cert-manager.io
     kind: ClusterIssuer
     name: some-name-NAME_SPACE-psmdb-issuer
   secretName: some-name-ssl

pkg/apis/psmdb/v1/psmdb_defaults.go

@@ -136,9 +136,6 @@ func (cr *PerconaServerMongoDB) CheckNSetDefaults(ctx context.Context, platform
 	if cr.Spec.TLS.IssuerConf.Kind == "" {
 		cr.Spec.TLS.IssuerConf.Kind = cm.IssuerKind
 	}
-	if cr.Spec.TLS.IssuerConf.Group == "" {
-		cr.Spec.TLS.IssuerConf.Group = "cert-manager.io"
-	}
 
 	if cr.Spec.UnsafeConf {
 		cr.Spec.Unsafe = UnsafeFlags{