Add more sysctl fields to kernel_report module

[mprovenc]

Below is a snippet from a correspondence with Joe Mario regarding which sysctl fields from his area of expertise should be added to the kernel_report module:

as for my area (perf/bpf) I can tell you following parameters make some
sense to move and should be just simple read/write to do so:

kernel.perf_cpu_time_max_percent
kernel.perf_event_max_contexts_per_stack
kernel.perf_event_max_stack
kernel.perf_event_mlock_kb
kernel.perf_event_paranoid

kernel.bpf_stats_enabled
kernel.unprivileged_bpf_disabled
net.core.bpf_jit_enable
net.core.bpf_jit_harden
net.core.bpf_jit_kallsyms
net.core.bpf_jit_limit

These should be added to the list of acceptable sysctl fields and tested at some point in the future. Tied to PR #58.