Add 'rm ca.srl' to kind-add-user workflow

[ChristianZaccaria]

Issue link

Related to: #33

What changes have been made

Added rm ca.srl to the cleanup as I found it was generated when creating the user locally.

Verification steps

With a KinD cluster named kind, I ran the following locally, where the ca.srl is now removed on cleanup:

        # Get KinD certificates
        docker cp kind-control-plane:/etc/kubernetes/pki/ca.crt .
        docker cp kind-control-plane:/etc/kubernetes/pki/ca.key .

        # Generate certificates for new user
        openssl genrsa -out user.key 2048
        openssl req -new -key user.key -out user.csr -subj '/CN=sdk-user/O=tenant'
        openssl x509 -req -in user.csr -CA ca.crt -CAkey ca.key -CAcreateserial -out user.crt -days 360

        # Add generated certificated to KinD context
        user_crt=$(base64 --wrap=0 user.crt)
        user_key=$(base64 --wrap=0 user.key)
        yq eval -i ".contexts += {\"context\": {\"cluster\": \"kind-kind\", \"user\": \"sdk-user\"}, \"name\": \"sdk-user\"}" $HOME/.kube/config
        yq eval -i ".users += {\"name\": \"sdk-user\", \"user\": {\"client-certificate-data\": \"$user_crt\", \"client-key-data\": \"$user_key\"}}" $HOME/.kube/config
        cat $HOME/.kube/config

        # Cleanup
        rm ca.crt
        rm ca.srl
        rm ca.key
        rm user.crt
        rm user.key
        rm user.csr

Checks

• I've made sure the tests are passing.
• Testing Strategy
  • Unit tests
  • Manual tests
  • Testing is not required for this change

[astefanutti]

/lgtm

[astefanutti]

/approve

[openshift-ci]

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