Add additional request name headers

[yoshi-automation]

This PR was generated using Autosynth. 🌈

Here's the log from Synthtool:

synthtool > Executing /tmpfs/src/git/autosynth/working_repo/Redis/synth.py.
synthtool > Ensuring dependencies.
synthtool > Pulling artman image.
latest: Pulling from googleapis/artman
Digest: sha256:e3c054a2fb85a12481c722af616c7fb6f1d02d862248385eecbec3e4240ebd1e
Status: Image is up to date for googleapis/artman:latest
synthtool > Cloning googleapis.
synthtool > Running generator for google/cloud/redis/artman_redis_v1beta1.yaml.
synthtool > Generated code into /home/kbuilder/.cache/synthtool/googleapis/artman-genfiles/php/google-cloud-redis-v1beta1.
synthtool > Running generator for google/cloud/redis/artman_redis_v1.yaml.
synthtool > Generated code into /home/kbuilder/.cache/synthtool/googleapis/artman-genfiles/php/google-cloud-redis-v1.
synthtool > Replaced 'Copyright \\d{4}' in src/V1beta1/Gapic/CloudRedisGapicClient.php.
synthtool > Replaced 'Copyright \\d{4}' in src/V1/Gapic/CloudRedisGapicClient.php.
synthtool > Replaced 'Copyright \\d{4}' in tests/Unit/V1beta1/CloudRedisClientTest.php.
synthtool > Replaced 'Copyright \\d{4}' in tests/Unit/V1beta1/CloudRedisClientPartialVeneerTest.php.
synthtool > Replaced 'Copyright \\d{4}' in tests/Unit/V1/CloudRedisClientTest.php.
synthtool > Replaced 'Copyright \\d{4}' in tests/Unit/V1/CloudRedisClientPartialVeneerTest.php.
synthtool > Replaced 'Copyright \\d{4}' in tests/System/V1beta1/CloudRedisClientTest.php.
synthtool > Replaced 'Copyright \\d{4}' in tests/System/V1/CloudRedisClientTest.php.
synthtool > Replaced 'will be removed in the next major release' in src/V1beta1/Instance_State.php.
synthtool > Replaced 'will be removed in the next major release' in src/V1beta1/Instance_Tier.php.
synthtool > Replaced 'will be removed in the next major release' in src/V1/FailoverInstanceRequest_DataProtectionMode.php.
synthtool > Replaced 'will be removed in the next major release' in src/V1/Instance_State.php.
synthtool > Replaced 'will be removed in the next major release' in src/V1/Instance_Tier.php.
synthtool > Replaced 'Instance_Tier' in src/V1beta1/Gapic/CloudRedisGapicClient.php.
synthtool > Replaced 'Instance_Tier' in src/V1/Gapic/CloudRedisGapicClient.php.
synthtool > Cleaned up 1 temporary directories.
synthtool > Wrote metadata to synth.metadata.

[codecov]

Codecov Report

Merging #1763 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master    #1763   +/-   ##
=========================================
  Coverage     91.53%   91.53%           
  Complexity     4360     4360           
=========================================
  Files           304      304           
  Lines         12901    12901           
=========================================
  Hits          11809    11809           
  Misses         1092     1092

---

Continue to review full report at Codecov.

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Δ = absolute <relative> (impact), ø = not affected, ? = missing data
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[codecov]

Codecov Report

Merging #1763 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master    #1763   +/-   ##
=========================================
  Coverage     91.53%   91.53%           
  Complexity     4360     4360           
=========================================
  Files           304      304           
  Lines         12901    12901           
=========================================
  Hits          11809    11809           
  Misses         1092     1092

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update b68c159...10e3e80. Read the comment docs.