Change REST and RESTCONF port to variables
- Default RESTPORT = 8080
- Default RESTCONFPORT = 8080
- Change via pybot command -v RESTCONFPORT=8181 when testing Karaf features

Change-Id: Ied8065d6d9c91f82dfffdc26f8feee23c2010a23
Signed-off-by: Christopher O'Shea <christopher.o.shea@ericsson.com>
Merge "Change REST and RESTCONF port to variables - Default RESTPORT = 8080 - Default RESTCONFPORT = 8080 - Change via pybot command -v RESTCONFPORT=8181 when testing Karaf features"