[PLAT-1617] Fix issue with GCP Subnet CIDR

Summary:
D12826 added support for new regions, but incorrectly assigned a CIDR causing the
auto-provision to fail. This fixes the CIDR collision.

Test Plan:
Run itest and verify that it works cleanly.
https://jenkins.dev.yugabyte.com/job/dev-itest-pipeline/252/

Reviewers: sanketh, rtsisyk, vmallepalli

Reviewed By: vmallepalli

Subscribers: jenkins-bot, yugaware

Differential Revision: https://phabricator.dev.yugabyte.com/D12904

Author: Arnav15

managed/devops/opscli/ybops/data/gcp-metadata.yml

@@ -109,12 +109,12 @@ regions:
     image: centos-7-v20210217
     project: centos-cloud
     zones: [ 'a', 'b', 'c' ]
-  asia-northeast3:
+  asia-southeast2:
     cidr_prefix: "10.220"
     image: centos-7-v20210217
     project: centos-cloud
     zones: [ 'a', 'b', 'c' ]
-  asia-southeast2:
+  asia-northeast3:
     cidr_prefix: "10.221"
     image: centos-7-v20210217
     project: centos-cloud
@@ -129,11 +129,6 @@ regions:
     image: centos-7-v20210217
     project: centos-cloud
     zones: [ 'a', 'b', 'c' ]
-  asia-south2:
-    cidr_prefix: "10.224"
-    image: centos-7-v20210217
-    project: centos-cloud
-    zones: [ 'a', 'b', 'c' ]
   northamerica-northeast2:
     cidr_prefix: "10.225"
     image: centos-7-v20210217
@@ -149,5 +144,10 @@ regions:
     image: centos-7-v20210217
     project: centos-cloud
     zones: [ 'a', 'b', 'c' ]
+  asia-south2:
+    cidr_prefix: "10.228"
+    image: centos-7-v20210217
+    project: centos-cloud
+    zones: [ 'a', 'b', 'c' ]
 
 credential_vars: ['GOOGLE_APPLICATION_CREDENTIALS', 'GCE_PROJECT']