The version number to use for the RPM package. By default, this is the project version. This value cannot contain a dash (-) due to contraints in the RPM file naming convention. Any specified value will be truncated at the first dash
The release number of the RPM.
Beginning with release 2.0-beta-2, this is an optional parameter. By default, the release will be generated from the modifier portion of the project version using the following rules:
If no modifier exists, the release will be 1.
If the modifier ends with SNAPSHOT, the timestamp (in UTC) of the build will be appended to end.
All instances of '-' in the modifier will be replaced with '_'.
If a modifier exists and does not end with SNAPSHOT, "_1" will be appended to end.