* Add repo metadata files for all the existing clients

* remove extra repo-metadata file

* Use different initial and max RPC timeout

* Match totalTimeout with maxRpcTimeout

* Use GAPIC defaults

* Use GAPIC defaults

* Default values

* Reorder

* added range

* fix comment

* added useAvroLogicalTypes

* fix comment

* fix comment as per feedback

* storage: hmac service account snippets

* fix expected<>actual; for (:) with bracket

* copyright header

* inline

* fix cases

* Base64

* reformat printing HMAC key metadata

* add note about showDeletedKeys

* format code

* add HMAC_KEY_SAMPLES_SERVICE_ACCOUNT to Kokoro

* Revert "add HMAC_KEY_SAMPLES_SERVICE_ACCOUNT to Kokoro"

This reverts commit e756253.

* add projectId as argument to snippets

* reformat

* reformat

* listHmacKeys snippet: do not filter by serviceAccountEmail

A Spanner transaction runner that was given a session with a prepared
read/write transaction would not use that transaction, but instead
always start a new one, causing an extra unnecessary round-trip to the
server. This regression was introduced by commit
d305770 (PR #5433).

…rsion (#6286)

* Move json dependency to google-cloud-spanner and upgrade to latest version.

* fix test

* code format

* optimize execution speed of test cases

* fix deadline exceeded errors

* make waiting time variable

…i-client (#6289)

…ev20190825-1.30.3 (#6282)

…rev20190907-1.30.3 (#6280)

* Release v0.110.0

* fix TranlateIT. use numbers for translation

* fix TranlateIT. use numbers for translation