ob-operator-2.3.4

Enhancement

1. Support setting oceanbase-sdk's timeout via environment variables
2. Skip observer in recover status when restarting
3. Optimize some default timeout setting
4. Optimize getting oceanbase's sys client

Bugfix

1. Add annotation support-static-ip to newly added obzone
2. Fix task fall back policy when pod is deleted during observer recovery process
3. Fix panic problem when obtenant's unit is unexpected
4. Check obzone spec changes during obzone rolling update