Add verfication of checksum for yq binary

[yhaliaw]

Overview

Add checkout verification of yq binary.

Rationale

Verify the yq binary in the runners are correct.

Our e2e test would only test if the yq binary downloaded in the e2e test is correct, but not what the runner downloaded during deployment.

Checklist

• The charm style guide was applied
• The contributing guide was applied
• The changes are compliant with ISD054 - Managing Charm Complexity
• The documentation is generated using src-docs
• The documentation for charmhub is updated.
• The PR is tagged with appropriate label (urgent, trivial, complex)

The integration test/e2e test would test if the checksum downloaded matches.
The e2e test would test if the yq binary is working.

[github-actions]

Test coverage for 3284750

Name                    Stmts   Miss Branch BrPart  Cover   Missing
-------------------------------------------------------------------
src/charm.py              413     95     99     20    75%   80-82, 108-110, 142-144, 204-212, 224-228, 328-333, 354, 371-377, 386-409, 427-429, 437-440, 447, 450-451, 467, 472-477, 522->525, 538-539, 541-542, 576-583, 607-608, 620-622, 637-638, 663-664, 666-667, 669-670, 744->746, 806-807, 823, 841-843, 847
src/charm_state.py         12      0      2      0   100%
src/errors.py              32      0      0      0   100%
src/event_timer.py         42      8      4      0    74%   94-97, 117-120
src/firewall.py            43     25     10      0    38%   38-42, 64-67, 75-149
src/github_type.py         36      0      0      0   100%
src/lxd_type.py            37      0      2      0   100%
src/metrics.py             55      2     10      1    95%   60->63, 112-113
src/runner.py             321     67     98     23    75%   48->52, 108->110, 214-221, 227-233, 260-261, 305-314, 338-343, 348, 368, 372-382, 431->434, 437-439, 446, 460, 470, 474, 476, 491, 538-543, 561, 654, 689, 715, 720-732, 746, 764, 788, 805-820, 828-848
src/runner_manager.py     245     26     92      9    88%   162, 219-221, 234-235, 247-249, 255-260, 264-265, 275-276, 295, 403, 424-428, 447, 465, 613, 633
src/runner_metrics.py      97      5     18      2    94%   122-123, 135, 185-186
src/runner_type.py         53      0     12      0   100%
src/shared_fs.py           80     10     12      0    89%   73-74, 160-161, 166-167, 173-174, 196-197
src/utilities.py           68      6     20      8    84%   74->76, 78->84, 89-91, 117, 131, 169, 222
-------------------------------------------------------------------
TOTAL                    1534    244    379     63    82%

Static code analysis report

Run started:2023-10-29 02:36:44.378860

Test results:
  No issues identified.

Code scanned:
  Total lines of code: 3454
  Total lines skipped (#nosec): 0
  Total potential issues skipped due to specifically being disabled (e.g., #nosec BXXX): 9

Run metrics:
  Total issues (by severity):
  	Undefined: 0
  	Low: 0
  	Medium: 0
  	High: 0
  Total issues (by confidence):
  	Undefined: 0
  	Low: 0
  	Medium: 0
  	High: 0
Files skipped (0):

[yhaliaw]

Moved to #149