* refactors signing and checksig methods out of SignArtifactActivity
* Sorts imports
* uses CombinedOutput instead of a buffer for thread safety

…12 system)

* removes existing, unused python rules
* downloads rules_pkg and loads dependencies

- Sorts sync-replace entries alphabetically
  - More compatible with go mod tidy
- Removes obsolete ioutil calls
- sorts imports: prettier

* New protected key, signed like keykeeper does on import.
* Remove history file (gitignore)

* Type interface:
  * This lets us replace individual methods in test mocks to simplify unit testing
  * Only contains EnsureGPGKey so far
* Also adds workingDir so that tests do not need root  access
* Fixes deprecated random seeding
* Adds gpgCmdEnv to the struct functions

* This lets it know the workingDir
* Also update ioutil use

…y or duplicated

* Add checksig and sign RPM to Server to make use of gpgCmdEnv
* Use interface to call EnsureGPGKey
* Use workingDir for paths

* Allows tests to run against more versions of gpg

* Allows tests to run on more systems
* Reduces confusion about GNUPGHOME by a small amount
* Also adds gpg-agent and keyboxd cleanups