Describe the solution you'd like
Simplify the way Keeper Secrets Manager configuration is initialized, namely use base64 configuration as opposed to use individual parts from the JSON file

What is the added value?
Simplicity of configuring access

Observations (Constraints, Context, etc):

As it is stated in Keeper documentation page:

Most Secrets Manager integrations use a base64 string ...

In Go SDK this is how it is set:

options := &ksm.ClientOptions{
	Config: ksm.NewMemoryKeyValueStorage("LONG BASE64 STRING")
}

It looks like all is needed is to simplify KeeperSecurityProvider to just contain base64 string and then change what getKeeperSecurityConfig returns.