Enable comparing versions containing git hashes and more

Distributions like SLES, use time stamps and git hashes between
version and release, e.g.: 2.0.3+20200128.df6c286d9-1.281. To support
such patterns and keep compatibility with other formats, a new regex
is used in osc_is_ver() and the 'awk' built-in functions were
deprecated (ocf_ver2num(), ocf_ver_level(), ocf_ver_complete_level())
in favor of sort(1) using keydef in ocf_version_cmp()