Renew pdc client doc
Renew pdc client doc

Correct build pdc client package from source with tito instead of
`make rpm`.

JIRA: PDC-1134

product-definition-center/product-definition-center,lao605/product-definition-center,release-engineering/product-definition-center,xychu/product-definition-center,tzhaoredhat/automation,tzhaoredhat/automation,product-definition-center/product-definition-center,lao605/product-definition-center,pombredanne/product-definition-center,tzhaoredhat/automation,product-definition-center/product-definition-center,xychu/product-definition-center,release-engineering/product-definition-center,pombredanne/product-definition-center,release-engineering/product-definition-center,pombredanne/product-definition-center,lao605/product-definition-center,xychu/product-definition-center,xychu/product-definition-center,release-engineering/product-definition-center,tzhaoredhat/automation,product-definition-center/product-definition-center,lao605/product-definition-center,pombredanne/product-definition-center