Deprecate one of the OTLP ssl_verify_mode ENV flags?

[shaul75]

Are both OTEL_RUBY_EXPORTER_OTLP_SSL_VERIFY_PEER and OTEL_RUBY_EXPORTER_OTLP_SSL_VERIFY_NONE necessary?

        def self.ssl_verify_mode
          if ENV.key?('OTEL_RUBY_EXPORTER_OTLP_SSL_VERIFY_PEER') # <- even if it's not set, the outcome will be the same due to the default else clause.
            OpenSSL::SSL::VERIFY_PEER
          elsif ENV.key?('OTEL_RUBY_EXPORTER_OTLP_SSL_VERIFY_NONE')
            OpenSSL::SSL::VERIFY_NONE
          else
            OpenSSL::SSL::VERIFY_PEER
          end
        end

I feel like keeping only one or the other would make more sense.
Since it has to be enabled by default, I think it would be more intuitive to rename it to to something like OTEL_RUBY_EXPORTER_OTLP_SKIP_SSL_VERIFY.

Then:

        def self.ssl_verify_mode
            ENV['OTEL_RUBY_EXPORTER_OTLP_SKIP_SSL_VERIFY'].present? ? OpenSSL::SSL::VERIFY_NONE : OpenSSL::SSL::VERIFY_PEER
        end