Bug 1113 - ietf-restconf needs to specify the version of ietf-yangtypes that must be imported.

Modified the internal ietf-restconf to specify the required version of ietf-yangtypes so runtime compilation runs without an issue.

Change-Id: I06f547aee6d26b7865ea93bbcdd76808d46d8151
Signed-off-by: Devin Avery <devin.avery@brocade.com>
Merge "Bug 1113 - ietf-restconf needs to specify the version of ietf-yangtypes that must be imported."