Ensure that `jq` is available in netdata installations 

##### Feature idea summary
To get the cgroup names for k8s, we introduced the use of the `jq` command in #5576. 
As @ktsaou commented there:
> We should probably do something about the `jq` command to make sure it is installed with netdata.
I mean, to be installed by `kickstart.sh` and `netdata.spec`.

##### Expected behavior
Ensure `jq` will be there when used.