components: Fix cilium-agent process detection
components: Fix cilium-agent process detection

Previously, the `components.IsCiliumAgent()` function was not able
to detect when cilium-agent was started from not the same dir as
the binary, e.g. `../daemon/cilium-agent`.

Fixes: b9064c5e8 ("cmd: Detect BPF map root properly")
Signed-off-by: Martynas Pumputis <6b0d31c0d563223024da45691584643ac78c96e8@lambda.lt>

tklauser/cilium,cilium/cilium,cilium-team/cilium,michi-covalent/cilium,tklauser/cilium,tgraf/cilium,cilium/cilium,tklauser/cilium,cilium-team/cilium,tgraf/cilium,cilium/cilium,tgraf/cilium,michi-covalent/cilium,cilium/cilium,cilium/cilium,tgraf/cilium,michi-covalent/cilium,tklauser/cilium,tgraf/cilium,michi-covalent/cilium,michi-covalent/cilium,tklauser/cilium,tgraf/cilium