The relevant log lines are
2015-11-13 17:38:31,020 INFO (tomcat-http--25) [;;] com.vmware.horizon.svadmin.service.ApplianceSslCertificateService - Executing command sudo /usr/local/horizon/scripts/verifyCertificate.hzn --verify /db/temp/certchain-6939372472531343610.pem /db/temp/key-691749540594821081.pem
2015-11-13 17:38:31,038 INFO (Thread-16577) [;;] com.vmware.horizon.svadmin.service.ApplianceSslCertificateService - Command execution response: Verifying certificate ...
2015-11-13 17:38:31,049 INFO (Thread-16577) [;;] com.vmware.horizon.svadmin.service.ApplianceSslCertificateService - Command execution response: Error validating certificate: /db/temp/certchain-6939372472531343610.pem: C = US, ST = Arizona, L = Scottsdale, O = "GoDaddy.com, Inc.", OU = http://certs.godaddy.com/repository/, CN = Go Daddy Secure Certificate Authority - G2
2015-11-13 17:38:31,049 INFO (Thread-16577) [;;] com.vmware.horizon.svadmin.service.ApplianceSslCertificateService - Command execution response: error 26 at 0 depth lookup:unsupported certificate purpose
2015-11-13 17:38:31,049 INFO (Thread-16577) [;;] com.vmware.horizon.svadmin.service.ApplianceSslCertificateService - Command execution response: OK
2015-11-13 17:38:31,051 INFO (tomcat-http--25) [;;] com.vmware.horizon.svadmin.service.ApplianceSslCertificateService - Command execution status: 61
2015-11-13 17:38:45,018 INFO (tomcat-http--25) [;;] com.vmware.horizon.svadmin.service.ApplianceSslCertificateService - Executing command sudo /usr/local/horizon/scripts/verifyCertificate.hzn --verify /db/temp/certchain-7414882433488538735.pem /db/temp/key-8266380859632638764.pem
2015-11-13 17:38:45,030 INFO (Thread-16579) [;;] com.vmware.horizon.svadmin.service.ApplianceSslCertificateService - Command execution response: Verifying certificate ...
2015-11-13 17:38:45,040 INFO (Thread-16579) [;;] com.vmware.horizon.svadmin.service.ApplianceSslCertificateService - Command execution response: Error validating certificate: /db/temp/certchain-7414882433488538735.pem: C = US, ST = Arizona, L = Scottsdale, O = "GoDaddy.com, Inc.", OU = http://certs.godaddy.com/repository/, CN = Go Daddy Secure Certificate Authority - G2
2015-11-13 17:38:45,040 INFO (Thread-16579) [;;] com.vmware.horizon.svadmin.service.ApplianceSslCertificateService - Command execution response: error 26 at 0 depth lookup:unsupported certificate purpose
2015-11-13 17:38:45,040 INFO (Thread-16579) [;;] com.vmware.horizon.svadmin.service.ApplianceSslCertificateService - Command execution response: OK
2015-11-13 17:38:45,042 INFO (tomcat-http--25) [;;] com.vmware.horizon.svadmin.service.ApplianceSslCertificateService - Command execution status: 61
2015-11-13 17:39:04,729 INFO (tomcat-http--25) [;;] com.vmware.horizon.svadmin.service.ApplianceSslCertificateService - Executing command sudo /usr/local/horizon/scripts/verifyCertificate.hzn --verify /db/temp/certchain-6962277823764126538.pem /db/temp/key-5786572328132885551.pem
2015-11-13 17:39:04,742 INFO (Thread-16582) [;;] com.vmware.horizon.svadmin.service.ApplianceSslCertificateService - Command execution response: Verifying certificate ...
2015-11-13 17:39:04,759 INFO (Thread-16582) [;;] com.vmware.horizon.svadmin.service.ApplianceSslCertificateService - Command execution response: Error validating certificate: /db/temp/certchain-6962277823764126538.pem: C = US, ST = Arizona, L = Scottsdale, O = "GoDaddy.com, Inc.", OU = http://certs.godaddy.com/repository/, CN = Go Daddy Secure Certificate Authority - G2
2015-11-13 17:39:04,759 INFO (Thread-16582) [;;] com.vmware.horizon.svadmin.service.ApplianceSslCertificateService - Command execution response: error 26 at 0 depth lookup:unsupported certificate purpose
2015-11-13 17:39:04,759 INFO (Thread-16582) [;;] com.vmware.horizon.svadmin.service.ApplianceSslCertificateService - Command execution response: OK
2015-11-13 17:39:04,761 INFO (tomcat-http--25) [;;] com.vmware.horizon.svadmin.service.ApplianceSslCertificateService - Command execution status: 61
I will follow up in a later post on the next steps