Ensure that gemfire keys from putAll are strings
Ensure that gemfire keys from putAll are strings

In some cases, v8 unhelpfully changes them to numbers under the covers

gemfire/node-gemfire,mross-pivotal/node-gemfire,mross-pivotal/node-gemfire,gemfire/node-gemfire,gemfire/node-gemfire,mross-pivotal/node-gemfire,mross-pivotal/node-gemfire,gemfire/node-gemfire,mross-pivotal/node-gemfire,gemfire/node-gemfire,gemfire/node-gemfire,mross-pivotal/node-gemfire