test: Add e2e tests using APKAM keys

[gkc]

- What I did For e2e tests:

• During setup, do enrollments for client and daemon atSigns
• Deny / revoke any other e2e_all enrollments that might be hanging around from a previous run
• If daemons are at least version 5.3.0 (Note: the current branch is so) then start them with APKAM keys file
• If clients are at least version 5.3.0 then start them with APKAM keys file

- How I did it

• new script, apkam_setup.sh to handle the enrollments
• modified start_daemons.sh and all of the places which run an sshnp or npt client so they use an APKAM keys file if they are at least version 5.3.0

- How to verify it e2e tests pass

[XavierChanth]

@gkc what is holding this PR back?

[gkc]

@gkc what is holding this PR back?

@XavierChanth as per notes in the PR description : Nothing, now that the other PR has been approved, other than I need to a) merge it, b) publish new version of at_onboarding_cli, c) update the at_onboarding_cli dependency here, d) have it reviewed again and then e) merged. I'll do all of that in the morning

[gkc]

@gkc what is holding this PR back?

@XavierChanth as per notes in the PR description : Nothing, now that the other PR has been approved, other than I need to a) merge it, b) publish new version of at_onboarding_cli, c) update the at_onboarding_cli dependency here, d) have it reviewed again and then e) merged. I'll do all of that in the morning

Have done all of that.