fix: APKAM keys expiry feature changes in at_onboarding_cli

[sitaram-kalluri]

- What I did

• Introduce auto expiry feature enables APKAM keys to expire after the specified duration.

- How I did it

• Changes in at_auth package

  • Introduce Duration apkamKeysExpiryDuration in "EnrollmentRequest" as an optional argument which represents the APKAM keys expiry duration, which accepts value from the user.

• Changes in at_commons package

  • Introduce apkamKeysExpiryDuration in enroll_verb_builder.dart. The expiry duration from the "enrollment_request" in at_auth package is set to the enroll_verb_builder.dart to propagate it to the at_secondary_server

• Changes in at_onboarding_cli

  • Introduce a new argument "-e" to enroll command to pass the expire duration to enroll, otp and spp verbs in human readable format.
  • In at_onboarding_service.dart, in sendEnrollRequest method, introduce apkamKeysExpiryDuration to set the expiry duration.

- How to verify it

• Manually tested the changes. From the on-boarding cli, send an enrollment request to secondary server with expiry duration set. Once the enrollment is approved, the APKAM keys can be used for authentication. After the duration, an exception stating keys are expired is returned when trying to authenticate.

• Test OTP with expiry duration:

  ~/IdeaProjects/atsign/core/at_libraries/packages/at_onboarding_cli/bin git:[2074-introducing-auto-expiry-and-time-to-birth-features-for-apkam-keys]
  dart activate_cli.dart otp -a @sitaram -r vip.ve.atsign.zone -k /home/sitaram/.atsign/keys/@sitaram_key.atKeys -e 1m,10s
  Connecting ... Connected
  1PHZCZ

• Test SPP with expiry duration:

  ~/IdeaProjects/atsign/core/at_libraries/packages/at_onboarding_cli/bin git:[2074-introducing-auto-expiry-and-time-to-birth-features-for-apkam-keys]
  dart activate_cli.dart spp -a @sitaram -r vip.ve.atsign.zone -k /home/sitaram/.atsign/keys/@sitaram_key.atKeys -s ABC123 -e 1m,10s
  Connecting ... Connected
  Server response: data:ok

• Test submit enrollment request:

  ~/IdeaProjects/atsign/core/at_libraries/packages/at_onboarding_cli/bin git:[2074-introducing-auto-expiry-and-time-to-birth-features-for-apkam-keys]
  dart activate_cli.dart enroll -a @sitaram -r vip.ve.atsign.zone -s ABC123 -k /home/sitaram/.atsign/keys/@sitaram_test.atKeys -d my-device -n wavi:rw -p my-app3 -e 1d,10h,12m
  Submitting enrollment request
  Enrollment ID: fe56ac78-26b1-4ed7-aa6f-1370ee94f67a
  Waiting for approval; will check every 10 seconds
  Checking ...  not approved. Will retry in 10 seconds
  Checking ...  approved.
  Creating atKeys file
  [Success] Your .atKeys file saved at /home/sitaram/.atsign/keys/@sitaram_test.atKeys

  - Description for the changelog

• fix: APKAM keys expiry feature changes in at_commons, at_auth and at_onboarding_cli

NOTE: For easy of review, adding all the changes in this PR. Will move the changes to the respective packages before merging to trunk.

Pending work : Add functional tests in onboarding cli once the secondary server changes are merged.

[sitaram-kalluri]

Looks fine except for

1. the dependency overrides which as you note we will not merge to trunk

2. the expiry time being in granularity of minutes, which will result in duration of the functional tests being increased by a minute

On the second point above, please use the approach which is being used in the npt program now (see packages/dart/sshnoports/bin/npt.dart in the noports repo) where the timeout argument is expected to be supplied in human-readable string form e.g. 3d,1h,20s for three days, 1 hour and 20 seconds. npt parses the supplied arg using the parseDuration function from the pub.dev/packages/duration package

You could also take this opportunity to add ttl arg to the spp and otp commands in auth_cli and again use the same approach of taking input in human-readable form

Modified code to accept expiry in human readable format. Also extended expiry feature to OTP and SPP commands. Updated the PR description accordingly.

[sitaram-kalluri]

The changes related to at_commons and at_auth are merged to trunk branch with the below PR's

• https://github.com/atsign-foundation/at_libraries/pull/658

• https://github.com/atsign-foundation/at_libraries/pull/661

The changes in at_onboarding_cli will be merged to trunk once the server changes are in-place.