Use milvus-proto/go-api/v2 for master

[congqixia]

/kind improvement
See also milvus-io/milvus#24717

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: congqixia

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[codecov]

Codecov Report

Merging #489 (7ec0475) into master (cc1c52d) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #489   +/-   ##
=======================================
  Coverage   84.09%   84.09%           
=======================================
  Files          36       36           
  Lines        3319     3319           
=======================================
  Hits         2791     2791           
  Misses        425      425           
  Partials      103      103           

Impacted Files	Coverage Δ
client/admin.go	83.33% <ø> (ø)
client/alias.go	100.00% <ø> (ø)
client/authentication.go	100.00% <ø> (ø)
client/collection.go	87.81% <ø> (ø)
client/connect.go	80.51% <ø> (ø)
client/data.go	69.91% <ø> (ø)
client/index.go	77.95% <ø> (ø)
client/insert.go	78.87% <ø> (ø)
client/maintainance.go	95.55% <ø> (ø)
client/options.go	68.00% <ø> (ø)
... and 13 more

[jiaoew1991]

/lgtm