property values using ${basedir} not rescanned for additional substitutions

[kford-oconnors]

When both ${basedir} and a second property value are used in a third property, the second property
name is not replaced by its value in the value of the third property.

Because ${basedir} is a special case in substitute_properties (server_config.rb#L2246) the lines where it occurs are not rescanned for additional properties.

Example:
config.file=${basedir}/deploy/ml-config-${environment}.xml
config.file > [path to app directory]/deploy/ml-config-${environment}.xml

Roxy version: 1.7.4

[RobertSzkutak]

Thanks for the PR to fix this, @kford-oconnors !