[SM] contrail-docs package not loaded while provisioning

Continuous build : 4.0.1.0-15.el7.centos
Centos networking provisioning

Issue:
While using contrail-stats command, observed that many tables were not present.
The command failed to fetch stats for AnalyticsApiStats.api_stats

root@nodeg12(analytics):/# contrail-stats --table AnalyticsApiStats.api_stats --select "name" "api_stats.useragent" "AVG(api_stats.response_size_bytes)" --where name="*"
usage: contrail-stats [-h] [--admin-user ADMIN_USER]
                      [--admin-password ADMIN_PASSWORD]
                      [--conf-file CONF_FILE]
                      [--analytics-api-ip ANALYTICS_API_IP]
                      [--analytics-api-port ANALYTICS_API_PORT]
                      [--start-time START_TIME] [--end-time END_TIME]
                      [--last LAST]
                      [--table {FieldNames.fields,FieldNames.fieldi,TelemetryStream.enterprise.juniperNetworks.fabricMessageExt.edges.class_stats.transmit_counts,UFlowData.flow,NodeStatus.disk_usage_info,NodeStatus.disk_usage_info,NodeStatus.disk_usage_info,NodeStatus.disk_usage_info,NodeStatus.disk_usage_info,NodeStatus.process_mem_cpu_usage,NodeStatus.process_mem_cpu_usage,NodeStatus.process_mem_cpu_usage,NodeStatus.process_mem_cpu_usage,NodeStatus.process_mem_cpu_usage,NodeStatus.system_mem_usage,NodeStatus.system_mem_usage,NodeStatus.system_mem_usage,NodeStatus.system_mem_usage,NodeStatus.system_mem_usage,NodeStatus.system_cpu_usage,NodeStatus.system_cpu_usage,NodeStatus.system_cpu_usage,NodeStatus.system_cpu_usage,NodeStatus.system_cpu_usage,NodeStatus.disk_usage_info,NodeStatus.process_mem_cpu_usage,NodeStatus.system_mem_usage,NodeStatus.system_cpu_usage}]
                      [--dtable DTABLE] [--select SELECT [SELECT ...]]

While debugging, observed that there is no "stats_schema" directory at the following path:
ls -al /usr/lib/python2.7/site-packages/opserver

Also, the following folder is supposed to have multiple .json and .htmml files, but its empty :
root@nodeg12(analytics):/# ls -la /usr/share/doc/contrail-docs/html/messages/
total 8
drwxr-xr-x. 2 root root 4096 Aug 7 19:43 .
drwxr-xr-x. 3 root root 4096 Aug 15 00:51 ..
root@nodeg12(analytics):/#

Looks like contrail-docs package has not been installed.