chore: shorten the route name for Ingress transformations

[tao12345666333]

Signed-off-by: Jintao Zhang zhangjintao9020@gmail.com

Type of change:

• Bugfix
• New feature provided
• Improve performance
• Backport patches

What this PR does / why we need it:

In the past, we used host + path directly to form its route name for readability,
but this method can cause problems in some scenarios.
For example, the generated name is too long.
The current APISIX limit its maximum length to 100.

We will construct the following structure for easy reading and debugging.
ing_namespace_ingressName_id

fix #781

Pre-submission checklist:

• Did you explain what problem does this PR solve? Or what new features have been added?
• Have you added corresponding test cases?
• Have you modified the corresponding document?
• Is this PR backward compatible? If it is not backward compatible, please discuss on the mailing list first

[codecov-commenter]

Codecov Report

Merging #898 (a4dfc63) into master (5f6a7c1) will increase coverage by 0.06%.
The diff coverage is 84.00%.

❗ Current head a4dfc63 differs from pull request most recent head 47e9e22. Consider uploading reports for the commit 47e9e22 to get more accurate results

@@            Coverage Diff             @@
##           master     #898      +/-   ##
==========================================
+ Coverage   32.01%   32.08%   +0.06%     
==========================================
  Files          71       72       +1     
  Lines        7764     7771       +7     
==========================================
+ Hits         2486     2493       +7     
  Misses       5004     5004              
  Partials      274      274              

Impacted Files	Coverage Δ
pkg/ingress/pod.go	37.34% <71.42%> (+2.34%)	⬆️
pkg/kube/translation/ingress.go	77.81% <100.00%> (+0.22%)	⬆️
test/e2e/e2e.go	100.00% <0.00%> (ø)

---

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 5f6a7c1...47e9e22. Read the comment docs.

[tao12345666333]

@gxthrj PTAL

[tao12345666333]

ping @gxthrj