[dnsapi] add MVMNET dns api

[marchrius]

This PR adds support for MVMNET DNS API https://mvmnet.com with docs at https://api.mvmnet.com/api/1.0/documentation/.

Features

• Add TXT records for ACME challenge
• Remove TXT records after validation

Testing

• Tested with staging and production environment
• Tested certificate issuance
• Tested automatic renewal

Usage

export MVMNET_ID="your_application_id"
export MVMNET_KEY="your_application_key"
export MVMNET_SEED="your_application_seed"

acme.sh --issue -d example.com --dns dns_mvmnet

The environment variables as case sensitive also in the value itself, keep attention to this.

Warnings

I cannot launch the test flow on GitHub because the API documentation and the API itself are behind a firewall set by provider. You need to contact the support through the ticket system at http://supporto.mvmnet.com/ and request for an IP assignation.

[github-actions]

Welcome
READ ME !!!!!
Read me !!!!!!
First thing: don't send PR to the master branch, please send to the dev branch instead.
Please read the DNS API Dev Guide.
You MUST pass the DNS-API-Test.
Then reply on this message, otherwise, your code will not be reviewed or merged.
Please also make sure to add/update the usage here: https://github.com/acmesh-official/acme.sh/wiki/dnsapi2
注意: 必须通过了 DNS-API-Test 才会被 review. 无论是修改, 还是新加的 dns api, 都必须确保通过这个测试.

[neilpang]

Please read the DNS API Dev Guide.
You MUST pass the DNS-API-Test.

[marchrius]

This is not possible, the service provider needs specific IP addresses as the documentation and APIs requires firewall permission (sigh).

I'll ask the provider to add GitHub Flow IPs to firewall (if applicable)

[neilpang]

https://github.com/acmesh-official/acme.sh/wiki/DNS-API-Dev-Guide