[FAB-3098] Add org name options to cryptogen
[FAB-3098] Add org name options to cryptogen

See [FAB-3098].
This adds the -peerOrgNames option to allow naming of the org names,
and the -ordererOrgname option to allow naming of a single orderer org.
For example:
   cryptogen -peerOrgNames A,B -ordererOrgName O

Change-Id: I7207a37524bcda5f045a2aa08227e726615b051f
Signed-off-by: Keith Smith <0f8efcf9aed721c212c631c567e094685b5cc962@us.ibm.com>

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