Use already installed openssl support for windows

[jimsch]

According to the image details the following openssl is already on the image

Version: 1.1.1 at C:\Program Files\OpenSSL\bin\openssl.exe
Version: 1.1.1d at C:\Strawberry\c\bin\openssl.exe
Version: 1.1.1f at C:\Program Files\Git\mingw64\bin\openssl.exe
Version: 1.1.1f at C:\Program Files\Git\usr\bin\openssl.exe
Version: 1.0.2j at C:\Program Files (x86)\Subversion\bin\openssl.exe

This means that the install step should be able to be removed.

[gocarlos]

In which image? Github or appveyer?

Do you want to keep appveyer in the future or go with github ci? I tend to prefer github ci as its cross platfrom in one file

[jimsch]

This is on github. They are locate someplace else on appveyor. In order to stop using appveyor we need to turn on running the tests.. My guess is that we could trim down travis to just doing the coveralls right now if tests were run.

[gocarlos]

we call also shift the travis stuff to github ci-> https://github.com/marketplace/actions/coveralls-github-action