Incorrect keystore naming format

[qoire]

The keystore currently generates Keystore Files with the format similar to the following:

5b9147d4-f478-455a-927f-ff177a813a60

This is incompatible with what the kernel expects, which is the following:

UTC--2018-04-22T01:46:20.441Z--a09b2af1f67c61cb761c3260a06b31828d2dfd0c445e5e1e7ec8b853cbfb58ee