Every CPack generator sets default CPACK_PACKAGING_INSTALL_PREFIX
variable value differently so test framework should support
that correctly - previous version expected RPM/Deb /usr default and
removed it for Archive packagers as the default there is /.
Adds support for epoch version to CPackRPM and
CPackDeb packagers.
Also adds better version checking to CPackDeb
that complies with Debian rules.
Fixes: #17057
Prerequirements should be searched for in
generator prerequirements function and only
checked for presence in configure file in
per test prerequirements function.
Content list for a certain test
should be the same between different
generators so whenever possible use
a single expected files list per
file for all generators.
Each generator generates its own file
format with different extensions but
they all create those file names by
a certain pattern and all of them
require the same pieces for that pattern
to work. Now we can only provide pieces
once and and each generator will use those
pieces to generate an expected file name.
Andrew Fuller