Ideas for implementation of ignoring self-signed certs.

**Is your feature request related to a problem? Please describe.**
We need the ability to ignore self-signed certs. This is mainly found when companies have a self-signed proxy.

**Describe the solution you'd like**
Have the option to ignore self-signed certs. What we will need to discuss is how to configure that option.

- Use a CLI flag. Something like `--ignore-self-signed` or `--no-verify-ssl`

- Add a config flag in the `$HOME/.aws/credentials` file

- Add it to each individual project

**Describe alternatives you've considered**
None

**Additional context**

I already have a bug report/request at #1452.

This fix will likely have to wait until PR #869 is finished.

My thought is to pass the config'd option to the AWS object config within the lib.

```

// We'd have to decide on the best way to configure it for each project/command/environment
const noVerifySsl = <>

if (httpProxy) {
const proxyAgent = require('proxy-agent');
aws.config.update({
httpOptions: {
rejectUnauthorized: noVerifySsl , // This is where we would set the correct option
agent: proxyAgent(httpProxy)
},
});
}

```

Start by reviewing issue #1452 and PR #869, then inspect the CLI and project configuration entry points and the AWS object setup in lib. Resolve where the option should be configured and how it should affect proxy connections; done requires an agreed configuration approach, implementation, and coverage for the supported CLI or project settings.

Written by the indexing model from the issue text.