Support poet certificates

[poszu]

Motivation

Closes #5204

Changes

Added support for registering in the poet services using a certificate instead of PoW. It still supports both ways and will fallback to the PoW if:

• certificate is not available (couldn't certify)
• the poet service doesn't support certificates

There is a new interface in activation package certifierService that provides a generic way to obtain a certificate for a given poet. It abstracts away the fact that a POST proof is used - it is hidden in certifierServiceClient, which could in future have different implementations for other poet services.

Changed the initial_post table to post as it now holds the latest POST proof. Relying solely on initial post proof OR an existing ATX could not work in case of a checkpoint (in fact this way it failed systests).

Test Plan

• added UTs
• added system tests

[poszu]

bors try

[bors[bot]]

try

Build failed:

• ci-status

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 79.16667% with 80 lines in your changes are missing coverage. Please review.

Project coverage is 80.7%. Comparing base (166e015) to head (7f83cab). Report is 4 commits behind head on develop.

Files	Patch %	Lines
activation/certifier.go	71.2%	29 Missing and 17 partials :warning:
activation/poet.go	82.3%	8 Missing and 7 partials :warning:
sql/localsql/nipost/post.go	79.5%	9 Missing and 1 partial :warning:
sql/localsql/certifier/db.go	87.8%	3 Missing and 1 partial :warning:
activation/activation.go	90.0%	2 Missing :warning:
node/node.go	91.6%	1 Missing and 1 partial :warning:
activation/nipost.go	88.8%	0 Missing and 1 partial :warning:

Additional details and impacted files

@@            Coverage Diff            @@
##           develop   #5221     +/-   ##
=========================================
- Coverage     80.8%   80.7%   -0.1%     
=========================================
  Files          287     290      +3     
  Lines        29905   30525    +620     
=========================================
+ Hits         24182   24659    +477     
- Misses        4140    4234     +94     
- Partials      1583    1632     +49     

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.

[poszu]

bors try

[poszu]

bors try

[spacemesh-bors[bot]]

try

Build failed:

• ci-status

[poszu]

bors try

[spacemesh-bors[bot]]

try

Build failed:

• systest-status

[poszu]

bors try

[spacemesh-bors[bot]]

try

Build failed:

• systest-status

[poszu]

bors try

[spacemesh-bors[bot]]

try

Build failed:

• systest-status

[poszu]

bors try

[spacemesh-bors[bot]]

try

Build succeeded:

• ci-status
• systest-status

[poszu]

bors try

[spacemesh-bors[bot]]

try

Build failed:

• systest-status

[poszu]

bors try

[poszu]

bors try

[spacemesh-bors[bot]]

try

Already running a review

[spacemesh-bors[bot]]

try

Build failed:

• systest-status

[poszu]

bors try

[spacemesh-bors[bot]]

try

Build failed:

• systest-status

[poszu]

bors try

[spacemesh-bors[bot]]

try

Build failed:

• systest-status

[poszu]

bors try

[spacemesh-bors[bot]]

try

Build succeeded:

• ci-status
• systest-status

[poszu]

bors try

[spacemesh-bors[bot]]

try

Build succeeded:

• ci-status
• systest-status

[poszu]

bors try

[spacemesh-bors[bot]]

try

Build succeeded:

• systest-status
• ci-status