disable consul in apollo-assembly by default

[nobodyiam]

What's the purpose of this PR

disable consul in apollo-assembly by default

Which issue(s) this PR fixes:

Fixes #3581

Brief changelog

disable consul in apollo-assembly by default

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• Read the Contributing Guide before making this pull request.
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[nobodyiam]

#3575

[codecov-io]

Codecov Report

Merging #3585 (09fbb5b) into master (d2059e6) will increase coverage by 0.04%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##             master    #3585      +/-   ##
============================================
+ Coverage     50.95%   50.99%   +0.04%     
- Complexity     2324     2328       +4     
============================================
  Files           447      448       +1     
  Lines         13989    14006      +17     
  Branches       1423     1424       +1     
============================================
+ Hits           7128     7143      +15     
- Misses         6373     6374       +1     
- Partials        488      489       +1     

Impacted Files	Coverage Δ	Complexity Δ
...llo/metaservice/controller/HomePageController.java	100.00% <ø> (ø)	2.00 <0.00> (ø)
...o/metaservice/service/DefaultDiscoveryService.java	100.00% <ø> (ø)	6.00 <0.00> (ø)
...lo/metaservice/service/ConsulDiscoveryService.java	100.00% <100.00%> (ø)	5.00 <5.00> (?)
.../apollo/internals/RemoteConfigLongPollService.java	77.10% <0.00%> (-1.21%)	28.00% <0.00%> (-1.00%)

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