In case of empty TOPOURL https_site.conf is not correctly parsed.

TOPOURL is not correctly replaced

07:56:37.29
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07:56:37.31

transportPCE forwarding disabled
topology api forwarding disabled
tile server forwarding disabled
starting sdnc-web
=================
WEBPROTOCOL : HTTPS
WEBPORT : 8443
SDNRPROTOCOL : https
SDNRHOST : sdnc.onap
SDNRPORT : 8443
TRPCEURL :
TOPOURL :
TILEURL :
SSL_CERT_DIR : /opt/app/osaaf/local/certs
SSL_CERTIFICATE: cert.pem (missing)
SSL_CERTIFICATE_KEY: key.pem (missing)

07:56:37.41 INFO ==> ** Starting NGINX **
2020/10/19 07:56:37 [warn] 29#0: the "user" directive makes sense only if the master process runs with super-user privileges, ignored in /opt/bitnami/nginx/conf/nginx.conf:2
nginx: [warn] the "user" directive makes sense only if the master process runs with super-user privileges, ignored in /opt/bitnami/nginx/conf/nginx.conf:2
2020/10/19 07:56:37 [emerg] 29#0: invalid URL prefix in /opt/bitnami/nginx/conf/server_blocks/https_site.conf:83
nginx: [emerg] invalid URL prefix in /opt/bitnami/nginx/conf/server_blocks/https_site.conf:83