Drop dependency on pystache since it nolong present in Fedora 32.
To implement it, simplified debian package build process.
It will be generate debian/ directory when building relocatable package,
we just need to run debuild using the package.
To generate debian/ directory this commit added debian_files_gen.py,
it construct whole directory including control and changelog files
from template files.
Since we need to stop pystache, these template files swiched to
string.Template class which is included python3 standard library.
see: https://github.com/scylladb/scylla/pull/6313
When we add product name customization, we mistakenly defined the
parameter on each package build script.
Number of script is increasing since we recently added relocatable
python3 package, we should merge it in single place.
Also we should save the parameter on relocatable package, just like
version-release parameters.
So move the definition to SCYLLA-VERSION-GEN, save it to
build/SCYLLA-PRODUCT-FILE then archive it to relocatable package.
Signed-off-by: Takuya ASADA <syuu@scylladb.com>
Message-Id: <20190422105304.23454-1-syuu@scylladb.com>
To align build system with scylla main repo, adding relocatable package
support.
On scylla-jmx, we don't provide libraries and linker since it's Java
program, just contains .jar file and dist/ directory.
