Fix building deb package

[kazan417]

Fixes building of debian package on distribution where codename have "_" symbols which is not allowed in package version.

I am contributing the new code of the whole pull request, including one or
several files that are either new files or modified ones, under the BSD-new
license.

[kazan417]

This pull request fixes such building error while running make package:
Run CPack packaging tool...
CPack: Create package using DEB
CPack: Install projects
CPack: - Run preinstall target for: MaxScale
CPack: - Install project: MaxScale []
CPack: - Install component: core
CPack: Create package
CPackDeb: - Generating dependency list
CMake Error at /usr/share/cmake-3.25/Modules/Internal/CPack/CPackDeb.cmake:407 (message):
CPackDeb: Debian package version must confirm to "^[0-9][A-Za-z0-9.+~-]*$"
regex!
Call Stack (most recent call first):
/usr/share/cmake-3.25/Modules/Internal/CPack/CPackDeb.cmake:801 (cpack_deb_prepare_package_vars)

CPack Error: Error while execution CPackDeb.cmake
CPack Error: Problem compressing the directory
CPack Error: Error when generating package: maxscale
make: *** [Makefile:71: package] Error 1

[markus456]

What version of Debian does this fail with?

[kazan417]

What version of Debian does this fail with?

This error appears not in Debian distro, but on other Debian-based distributive. In Debian there is no distro containing "_" symbol in the codename now, but it is possible in the future. But Debian-based package manager used not only on Debian.

This fix adds general compatibility and conformance to debian policy version numbering - 5.6.12

The version number of a package. The format is: [epoch:]upstream_version[-debian_revision]
The upstream_version must contain only alphanumerics and the characters . + - ~ (full stop, plus, hyphen, tilde) and should start with a digit. If there is no debian_revision then hyphens are not allowed.

https://www.debian.org/doc/debian-policy/ch-controlfields.html#special-version-conventions

[kazan417]

Reopened this by oter pull request #401