[Couchbase] Add dimensions mapping to cache datastream

[agithomas]

• Enhancement

What does this PR do?

Add dimensions to bucket datastream

Checklist

• I have reviewed tips for building integrations and this pull request is aligned with them.
• I have verified that all data streams collect metrics or logs.
• I have added an entry to my package's changelog.yml file.
• I have verified that Kibana version constraints are current according to guidelines.

How to test this PR locally

1. Build verification
   elastic-package build
elastic-package stack up -v -d --services package-registry
2. Document count verification after enablement
3. Dashboard verification after enablement
4. Index template verification
5. Index mapping verification
6. Index settings verification.

• Verified that there exists mapping time_series_dimensions mapping after tsdb enablement
• Verified that there exists time_series settings after TSDB enablement.
• Verified that the dashboards are not broken after the TSDB enablement.
• Index rollover after TSDB disablement

Related issues

• Relates [Couchbase] TSDB Enablement #7378

[elasticmachine]

💚 Build Succeeded

the below badges are clickable and redirect to their specific view in the CI or DOCS

Expand to view the summary

Build stats

• Start Time: 2023-08-22T10:34:42.117+0000

• Duration: 27 min 6 sec

Test stats 🧪

Test	Results
Failed	0
Passed	45
Skipped	0
Total	45

🤖 GitHub comments

Expand to view the GitHub comments

To re-run your PR in the CI, just comment with:

• /test : Re-trigger the build.

[elasticmachine]

🌐 Coverage report

Name	Metrics % (covered/total)	Diff
Packages	100.0% (10/10)	💚
Files	100.0% (10/10)	💚
Classes	100.0% (10/10)	💚
Methods	100.0% (72/72)	💚 54.545
Lines	100.0% (1076/1076)	💚
Conditionals	100.0% (0/0)	💚

[agithomas]

Verification that the dashboard works ok

[agithomas]

Sample of the prometheus metrics endpoint

sgw_cache_num_active_channels{database="beer-sample"} 0
sgw_cache_num_active_channels{database="travel-sample"} 0
# HELP sgw_cache_num_skipped_seqs num_skipped_seqs,
# TYPE sgw_cache_num_skipped_seqs counter
sgw_cache_num_skipped_seqs{database="beer-sample"} 30
sgw_cache_num_skipped_seqs{database="travel-sample"} 0
# HELP sgw_cache_pending_seq_len pending_seq_len,
# TYPE sgw_cache_pending_seq_len gauge
sgw_cache_pending_seq_len{database="beer-sample"} 0
sgw_cache_pending_seq_len{database="travel-sample"} 0
# HELP sgw_cache_rev_cache_bypass rev_cache_bypass,
# TYPE sgw_cache_rev_cache_bypass gauge
sgw_cache_rev_cache_bypass{database="beer-sample"} 0
sgw_cache_rev_cache_bypass{database="travel-sample"} 0
# HELP sgw_cache_rev_cache_hits rev_cache_hits,
# TYPE sgw_cache_rev_cache_hits counter
sgw_cache_rev_cache_hits{database="beer-sample"} 0
sgw_cache_rev_cache_hits{database="travel-sample"} 0
# HELP sgw_cache_rev_cache_misses rev_cache_misses,
# TYPE sgw_cache_rev_cache_misses counter
sgw_cache_rev_cache_misses{database="beer-sample"} 0
sgw_cache_rev_cache_misses{database="travel-sample"} 0

[ritalwar]

LGTM!

[elasticmachine]

Package couchbase - 1.2.1 containing this change is available at https://epr.elastic.co/search?package=couchbase