Merge pull request #217 from msau42/owners

add new reviewers and remove inactive reviewers

KUBERNETES_CSI_OWNERS_ALIASES

@@ -22,17 +22,19 @@ aliases:
   - ggriffiths
   - gnufied
   - humblec
+  - mauriciopoppe
   - j-griffith
-  - Jiawei0227
   - jingxu97
   - jsafrane
   - pohly
   - RaunakShah
+  - sunnylovestiramisu
   - xing-yang
 
 # This documents who previously contributed to Kubernetes-CSI
 # as approver.
 emeritus_approvers:
+- Jiawei0227
 - lpabon
 - sbezverk
 - vladimirvivien