test(s2n-quic-core): enable kani on a few harnesses

[zhassan-aws]

Resolved issues:

N/A

Description of changes:

Enable Kani on a few Bolero harnesses (ct, ipv4, ipv6, and rtt_estimator). This brings up the number of harnesses run by Kani from 16 to 30.

The runtime goes up by about 4 minutes. Current:

Complete - 16 successfully verified harnesses, 0 failures, 16 total.
        Command being timed: "cargo kani --tests"
        User time (seconds): 412.77
        System time (seconds): 22.20
        Percent of CPU this job got: 107%
        Elapsed (wall clock) time (h:mm:ss or m:ss): 6:43.56
        Average shared text size (kbytes): 0
        Average unshared data size (kbytes): 0
        Average stack size (kbytes): 0
        Average total size (kbytes): 0
        Maximum resident set size (kbytes): 3067656
        Average resident set size (kbytes): 0
        Major (requiring I/O) page faults: 527
        Minor (reclaiming a frame) page faults: 9324258
        Voluntary context switches: 132921
        Involuntary context switches: 3566
        Swaps: 0
        File system inputs: 280
        File system outputs: 10068744
        Socket messages sent: 0
        Socket messages received: 0
        Signals delivered: 0
        Page size (bytes): 4096
        Exit status: 0

After:

Complete - 30 successfully verified harnesses, 0 failures, 30 total.
        Command being timed: "cargo kani --tests"
        User time (seconds): 634.79
        System time (seconds): 30.46
        Percent of CPU this job got: 106%
        Elapsed (wall clock) time (h:mm:ss or m:ss): 10:26.72
        Average shared text size (kbytes): 0
        Average unshared data size (kbytes): 0
        Average stack size (kbytes): 0
        Average total size (kbytes): 0
        Maximum resident set size (kbytes): 3096388
        Average resident set size (kbytes): 0
        Major (requiring I/O) page faults: 569
        Minor (reclaiming a frame) page faults: 13935868
        Voluntary context switches: 179314
        Involuntary context switches: 4479
        Swaps: 0
        File system inputs: 296
        File system outputs: 11680040
        Socket messages sent: 0
        Socket messages received: 0
        Signals delivered: 0
        Page size (bytes): 4096
        Exit status: 0

Call-outs:

Testing:

No

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[camshaft]

Very cool!