fix:fix rule-based router when using RestTemplate.

[SkyeBeFreeman]

PR Type

Bugfix.

Describe what this PR does for and how you did.

Adding the issue link (#xxx) if possible.

Note

Checklist

• Add information of this PR to CHANGELOG.md in root of project.
• Add documentation in javadoc or comment below the PR if necessary.

Checklist (Optional)

• Will pull request to branch of 2020.0.
• Will pull request to branch of 2022.0.
• Will pull request to branch of hoxton.

[codecov]

Codecov Report

Merging #1201 (c898ca8) into 2020.0 (f186d2c) will decrease coverage by 0.07%.
The diff coverage is 40.00%.

@@             Coverage Diff              @@
##             2020.0    #1201      +/-   ##
============================================
- Coverage     75.81%   75.74%   -0.07%     
+ Complexity     1579     1577       -2     
============================================
  Files           255      255              
  Lines          5788     5792       +4     
  Branches        703      705       +2     
============================================
- Hits           4388     4387       -1     
- Misses         1020     1022       +2     
- Partials        380      383       +3     

Files	Coverage Δ
...cement/config/RpcEnhancementAutoConfiguration.java	100.00% <ø> (ø)
...polaris/router/config/RouterAutoConfiguration.java	85.00% <40.00%> (-15.00%)	⬇️

... and 1 file with indirect coverage changes