fixed carbon kernel dependencies and version - 4.3.0
Fixed importFeatureDef version for carbon kernel version - 4.3.0
Changing kernel version from 4.3.0 to 4.3.0-SNAPSHOT
Revert changes to importFeatureDef for org.wso2.carbon.registry.core
Merge pull request #37 from Niranjan-K/release-4.3.0

Fixed carbon kernel dependencies and version - 4.3.0