* method rename: GetInstalledItemsAsString() -> GetInstalledItemNames()
* use path package
* Comments and method names
* Extract method Item.setVersionState() from Hub.itemVisit()
* refact localSync(), itemVisit() etc.
* fix check for cyclic dependencies, with test
* unused param
* (slightly) simpler ListItems() -> listItems()
* listItems(): always showHeader, deduce showType
ref. https://github.com/crowdsecurity/crowdsec/issues/1068
* simplify Item.disable()
also, .tainted and .installed do not need a default since they are always in the json output now
* Drop unused parameters
* csconfig: drop redundant hub information on *Cfg structs
* rename validItemFileName() -> item.validPath()
* Methods on hub object
* updated tests to reduce need of csconfig.Config or global state
- updated logs and user messages
- added func tests for all the items: install, remove, upgrade, list
- rewritten taint tests for collections
- removed redundant csconfig.LoadPrometheus()
Package fflag provides a simple feature flag system.
Feature names are lowercase and can only contain letters, numbers, undercores
and dots.
good: "foo", "foo_bar", "foo.bar"
bad: "Foo", "foo-bar"
A feature flag can be enabled by the user with an environment variable
or by adding it to {ConfigDir}/feature.yaml
I.e. CROWDSEC_FEATURE_FOO_BAR=true
or in feature.yaml:
```
---
- foo_bar
```
If the variable is set to false, the feature can still be enabled
in feature.yaml. Features cannot be disabled in the file.
A feature flag can be deprecated or retired. A deprecated feature flag is
still accepted but a warning is logged. A retired feature flag is ignored
and an error is logged.
A specific deprecation message is used to inform the user of the behavior
that has been decided when the flag is/was finally retired.
