reassign port numbers to 7050-7060 range to avoid conflicts with
Windows port usage (5000). Fixes #2283
https://github.com/hyperledger/fabric/issues/2283



Port assignments as follows:
7050 REST
7051 peer gRPC
7052 peer CLI
7053 peer events
7054 eCAP
7055 eCAA
7056 tCAP
7057 tCAA
7058 tlsCAP
7059 tlsCAA

NOTE: when this PR lands, it will require people to rebuild their Vagrant
development environment(s), so we will want to make an announcement.

Also @bcbrock recommended that we eventually seek a block of ports from IANA.
We should hold off on that until we sort out Consensus next.

Change-Id: I1e54d45589e155a69a2a779b1dac447d5473cf03
Signed-off-by: Christopher Ferris <chrisfer@us.ibm.com>