fix: expire is a keyword argument for beaker cache

[tianruzhou-db]

Summary of Changes

Change expire from positional argument to keyword argument.
Or cache will never be refreshed.

Tests

Write a simple getRandNum function locally:

@_CACHE.cache('test', 1)
def getRandNum(input):
    return random.randint(0, 10)

If I treat expire as a positional argument, above function will always return the same value.
However, after I change it to keyword argument:

@_CACHE.cache('test', expire=1)
def getRandNum(input):
    return random.randint(0, 10)

The value will change every second.

Documentation

What documentation did you add or modify and why? Add any relevant links then remove this line

CheckList

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• PR title addresses the issue accurately and concisely. Example: "Updates the version of Flask to v1.0.2"
  • In case you are adding a dependency, check if the license complies with the ASF 3rd Party License Policy.
• PR includes a summary of changes.
• PR adds unit tests, updates existing unit tests, OR documents why no test additions or modifications are needed.
• In case of new functionality, my PR adds documentation that describes how to use it.
  • All the public functions and the classes in the PR contain docstrings that explain what it does
• PR passes make test

[codecov-io]

Codecov Report

Merging #239 (2c9230d) into master (2752492) will increase coverage by 2.59%.
The diff coverage is 70.73%.

@@            Coverage Diff             @@
##           master     #239      +/-   ##
==========================================
+ Coverage   74.10%   76.69%   +2.59%     
==========================================
  Files          25       27       +2     
  Lines        1255     1326      +71     
  Branches      136      159      +23     
==========================================
+ Hits          930     1017      +87     
+ Misses        297      265      -32     
- Partials       28       44      +16     

Impacted Files	Coverage Δ
metadata_service/api/popular_tables.py	100.00% <ø> (ø)
metadata_service/api/user.py	100.00% <ø> (ø)
metadata_service/proxy/shared.py	28.57% <28.57%> (ø)
metadata_service/proxy/neo4j_proxy.py	71.46% <57.14%> (-3.54%)	⬇️
metadata_service/api/badge.py	61.29% <61.29%> (ø)
metadata_service/proxy/base_proxy.py	67.08% <75.00%> (-0.06%)	⬇️
metadata_service/proxy/atlas_proxy.py	80.34% <79.19%> (-3.97%)	⬇️
metadata_service/__init__.py	76.47% <100.00%> (ø)
metadata_service/api/dashboard.py	81.81% <100.00%> (+8.48%)	⬆️
metadata_service/api/table.py	100.00% <100.00%> (ø)
... and 10 more

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