Update KONG_NGINX_MAIN_ENV with client SSL cert vars

Added temporary environment variables for client SSL certificate.

Author: ikethecoder

sdx/image/Dockerfile

@@ -112,7 +112,8 @@ ENV KONG_CLIENT_SSL_CERT="/etc/secrets/sdx-edge-client-cert/tls.crt"
 ENV KONG_CLIENT_SSL_CERT_KEY="/etc/secrets/sdx-edge-client-cert/tls.key"
 
 # Make the env var available for using in custom plugins
-ENV KONG_NGINX_MAIN_ENV="KONG_SIGNING_CERT;env KONG_SIGNING_CERT_KEY;env AWS_ACCESS_KEY_ID;env AWS_SECRET_ACCESS_KEY;env AWS_REGION"
+# NOTE env KONG_CLIENT_SSL_CERT;env KONG_CLIENT_SSL_CERT_KEY only temporary until we add token exchange plugin
+ENV KONG_NGINX_MAIN_ENV="KONG_SIGNING_CERT;env KONG_SIGNING_CERT_KEY;env AWS_ACCESS_KEY_ID;env AWS_SECRET_ACCESS_KEY;env AWS_REGION;env KONG_CLIENT_SSL_CERT;env KONG_CLIENT_SSL_CERT_KEY"
 
 # Client certificate to present when proxying to upstream services
 ENV KONG_NGINX_PROXY_PROXY_SSL_CERTIFICATE="/etc/secrets/sdx-edge-client-cert/tls.crt"