This RFE is to undo some of the changes introduced by RFE 4387949: Need to
add Sockets and key arrays to the X509KeyManager.choose*Alias() methods.

After revisting the API for X509Keymanager.chooseServerAlias, and trying to determine the use of passing in the array of keytypes to this method, it appears that there is no real use of it in the chooseServerAlias method.

The previous RFE 4387949 requested for passing in an array of
keytypes for chooseServerAlias method as it did for chooseClientAlias
method.

This RFE is for changing the chooseServerAlias method in X509KeyManager interface to take a single keytype instead of an array of keytypes as a parameter.