fix(prometheus): fix k8s 1.16 cannot install prometheus

Signed-off-by: Feng Kun <fengkun32@gmail.com>

feat(installer): enable logagent default

Merge pull request tkestack#518

fix(cluster): backport from 1.3 to fix ipam service ip and floating ip cm

fix: cluster gpu type validation

Signed-off-by: Tengfei Wang <tfwang@alauda.io>

fix: mark master

Signed-off-by: Tengfei Wang <tfwang@alauda.io>

release v1.2.3

fix: get metrics failed if values contain NaN

feat: set retention time to 2h to reduce memory usage of prometheus

Signed-off-by: Feng Kun <fengkun32@gmail.com>

fix: GetSourceIP missing port

release v1.2.0

fix: provider config when use thirdparty registry