[crmsh-4.6] Unify version definition

[nicholasyang2022]

There are 2 version strings used in crmsh:

1. The package metadata defined in setup.py. It was hardcoded in setup.py.
2. The version file in source root ./version, which will be installed to /usr/shar/crmsh/version, used by crm --version. It was hardcoded in AC_INIT macro in configure.ac.

This pull request contains 2 changes:

1. Make setup.py read version from ./version, so that the version string is unified between python package metadata and crm --version.
2. Fix the --with-version option in autoconf, so that it can override the version string in generated ./version file. This allow a packager to override the version string.

With these change, a packager can use git describe and ./configure --with-version to generate version string automatically from git tags.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (54751d3) 51.46% compared to head (f165e5b) 52.80%.

Additional details and impacted files

@@              Coverage Diff              @@
##           crmsh-4.6    #1280      +/-   ##
=============================================
+ Coverage      51.46%   52.80%   +1.33%     
=============================================
  Files             83       83              
  Lines          25020    25020              
=============================================
+ Hits           12877    13211     +334     
+ Misses         12143    11809     -334     

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[liangxin1300]

LGTM

Thanks!