[release-2.6.x] Add TLS config to query frontend

[aminesnow]

What this PR does / why we need it:
This PR backports #6444 to 2.6.x.

Which issue(s) this PR fixes:
Related to #5743

Special notes for your reviewer:
This PR is needed for this operator fix PR #6443

Checklist

• Documentation added
• Tests updated
• Is this an important fix or new feature? Add an entry in the CHANGELOG.md.
• Changes that require user attention or interaction to upgrade are documented in docs/sources/upgrading/_index.md

[grafanabot]

./tools/diff_coverage.sh ../loki-main/test_results.txt test_results.txt ingester,distributor,querier,querier/queryrange,iter,storage,chunkenc,logql,loki

Change in test coverage per package. Green indicates 0 or positive change, red indicates that test coverage for a package fell.

+           ingester	0.4%
+        distributor	0%
-            querier	-0.3%
+ querier/queryrange	0%
+               iter	0%
+            storage	0%
+           chunkenc	0%
+              logql	0.2%
-               loki	-2.2%