Allow for valid hibernate environment variables

[gmemstr]

*nix systems can't have periods in their environment variable names, so we instead look for HIBERNATE prefixes, then lowercase and translate underscores to periods. This will allow for better compatibility with *nix systems when configuring likely sensitive hibernate values.

[FireMasterK]

How would this work for configuration properties that have a _ such as hibernate.connection.handling_mode for example?

[gmemstr]

@FireMasterK Given that sort of variable isn't sensitive, I don't image many people would use an environment variable to set it. However, we could swap out a single underscore for a double underscore in the env variable names.

[FireMasterK]

@FireMasterK Given that sort of variable isn't sensitive, I don't image many people would use an environment variable to set it. However, we could swap out a single underscore for a double underscore in the env variable names.

Yes I think that would be a reasonable workaround!