feat: [sc-106625] http analyzer for in-cluster

[nvanthao]

Story details: https://app.shortcut.com/replicated/story/106625

Changes

• Refactor existing host HTTP analyzer code, move analyzing code into new function analyzeHTTPResult that will be re-used by in-cluster HTTP analyzer.

Sample spec

apiVersion: troubleshoot.sh/v1beta2
kind: SupportBundle
metadata:
  name: sample
spec:
  collectors:
    - http:
        collectorName: healthz
        get:
          url: https://dummyjson.com/test
          timeout: 5s
  analyzers:
    - http:
        collectorName: healthz
        outcomes:
          - warn:
              when: "error"
              message: Error connecting to dummyjson.com/test
          - pass:
              when: "statusCode == 200"
              message: Connected to dummyjson.com/test
          - warn:
              message: "Unexpected response"

apiVersion: troubleshoot.sh/v1beta2
kind: Preflight
metadata:
  name: sample
spec:
  collectors:
    - http:
        collectorName: healthz
        get:
          url: https://dummyjson.com/test
          timeout: 5s
  analyzers:
    - http:
        collectorName: healthz
        outcomes:
          - warn:
              when: "error"
              message: Error connecting to dummyjson.com/test
          - pass:
              when: "statusCode == 200"
              message: Connected to dummyjson.com/test
          - warn:
              message: "Unexpected response"

[nvanthao]

Many thanks @DexterYan !