Added Update method for developer's keys
Added Update method for developer's keys

sonata-nfv/son-gkeeper,jbonnet/son-gkeeper,sonata-nfv/son-gkeeper,jbonnet/son-gkeeper,felipevicens/son-gkeeper,jbonnet/son-gkeeper,sonata-nfv/son-gkeeper,sonata-nfv/son-gkeeper,dang03/son-gkeeper,jbonnet/son-gkeeper,dang03/son-gkeeper,dang03/son-gkeeper,felipevicens/son-gkeeper,felipevicens/son-gkeeper,dang03/son-gkeeper,felipevicens/son-gkeeper