Replace pki client-cert-import

The CI tests has been updated to use pki nss-cert-import and
pki pkcs12-import commands to import certs and PKCS #12 files.

.github/workflows/pki-tests.yml

@@ -77,10 +77,16 @@ jobs:
       - name: Verify CA admin
         run: |
           docker exec pki pki-server cert-export ca_signing --cert-file ca_signing.crt
-          docker exec pki pki client-cert-import ca_signing --ca-cert ca_signing.crt
-          docker exec pki pki client-cert-import \
+
+          docker exec pki pki nss-cert-import \
+              --cert ca_signing.crt \
+              --trust CT,C,C \
+              ca_signing
+
+          docker exec pki pki pkcs12-import \
               --pkcs12 /root/.dogtag/pki-tomcat/ca_admin_cert.p12 \
               --pkcs12-password Secret.123
+
           docker exec pki pki -n caadmin ca-user-show caadmin
 
       - name: Gather artifacts