Add pre-check for the 'ss' command (#2850)
Add pre-check for the 'ss' command (#2850)

- It was known that the `ss` command will load required kernel modules
  automatically and won't release them after the execution.
  To avoid changing the system after the collection, `pre-check` is added
  to ensure only collecting this spec when required modules are loaded
  See: https://bugzilla.redhat.com/show_bug.cgi?id=1903183

Signed-off-by: Xiangce Liu <6f4946a173cc16b4c8ed6d9f6e7adce8344c97fc@redhat.com>
RedHatInsights/insights-core,RedHatInsights/insights-core