Bump to 2.6.1

Update some examples before new release

Small improvements for release (#56)

* improve --help output
* improve --version output with influxdb/prometheus support
* fix COPR last-commit-hash feature

Bump to 2.4.1 version

Bump version to 2.4.0

Bump to version 2.3.2

Several Python tools enhancements

cmonitor_chart:
* BACKWARD INCOMPATIBLE CHANGE: remove --input option in favour of more standard positional argument for input
* BACKWARD INCOMPATIBLE CHANGE: remove --filter option moved into new cmonitor_filter --task_name option
* add support for reading JSON directly from stdin using '-'
* add custom metadata in chart output under "Configuration"
* add commit hash into --version output
* refactoring to share code with other Python utils
* refactoring to allow using cmonitor_chart from other Python programs by moving all core classes into system-wide python modules

cmonitor_statistics:
* BACKWARD INCOMPATIBLE CHANGE: remove --input option in favour of more standard positional argument for input
* add support for reading JSON directly from stdin using '-'
* add commit hash into --version output
* refactoring to share code with other Python utils
* refactoring to allow using cmonitor_statistics from other Python programs by moving all core classes into system-wide python modules

cmonitor_collector:
* add commit hash into --version output

others:
* add new cmonitor_filter utility that can be used as filtering stage before cmonitor_statistics or cmonitor_chart are used
* all components: bump to a 3digits version 2.3.0 plus release number for RPMs fixed to 0; this is to better match github tags

cmonitor_collector developments to improve the Docker-monitoring-Dock…

…er scenario

cmonitor_collector:
* formalize list of monitored files and dump it as debug log after initialization using new helper get_list_monitored_files()
* create CMonitorSystem::sample_memory() using newer FastFileReader method instead of proc_read_numeric_stats_from()
* remove slow proc_read_numeric_stats_from() using fopen()+sscanf()
* move all checks against "m_nCollectFlags" into each sample_*() function to be coherent with new get_list_monitored_files()
* move info FastFileReader some generic parsers to read simple stats from the file
* move into "deep" collection mode several per-process KPIs to make the output JSON more compact in general case
* fix regression where the first samples would have CPU close to 100% int he "cgroup_tasks" JSON section
* share the PID reader between cgroup processes/network stats collector code
* get rid of lscpu dependency, not available in the alpine docker image and rather read more kernel files about CPU min/max frequency, NUMA topology, etc
* add docker-collecting-docker-stats example 

cmonitor_chart:
* remove use of "lscpu" section from input JSON and instead process the "cpuinfo" section with some logic to produce results similar to the ones of "lscpu"
* remove use of "cpu_tot" KPI that was removed

Compress again by default all data inside HTMLs

Feature/cgroups v2 (#23)

Feature/cgroups v2 (#23)

* add support for "cpu" and "memory" cgroup controllers v2
* bump major version of cmonitor_collector and cmonitor_tools from 1.8-5 to 2.0-0
* add new data collected from kernel of Fedora35
* backward incompat change: change cgroups v1 memory stats replacing the "total_" prefix with "stat." to make them more similar to cgroups v2 stats
* add major version check in cmonitor_chart and cmonitor_statistics to avoid troubles when mixing by mistake recordings obtained with version 1.8-5 and version 2.0-0
* regenerate all examples