feat: add LOG_LEVEL environment variable to the cloud-agent logback.x…

[yshyn-iohk]

…ml and e2e tests docker file

Description:

• Add the LOG_LEVEL environment variable to dynamically configure the log level of the cloud-agent service in the docker container

Checklist:

• My PR follows the contribution guidelines of this project
• My PR is free of third-party dependencies that don't comply with the Allowlist
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• I have checked the PR title to follow the conventional commit specification

[github-actions]

Integration Test Results

 23 files  ±0   23 suites  ±0   2s ⏱️ -1s
 56 tests ±0   56 ✅ ±0  0 💤 ±0  0 ❌ ±0 
103 runs  ±0  103 ✅ ±0  0 💤 ±0  0 ❌ ±0 

Results for commit c82929f. ± Comparison against base commit b791ad2.

[github-actions]

Unit Test Results

105 files  ±0  105 suites  ±0   19m 56s ⏱️ +22s
889 tests ±0  881 ✅ ±0  8 💤 ±0  0 ❌ ±0 
896 runs  ±0  888 ✅ ±0  8 💤 ±0  0 ❌ ±0 

Results for commit c82929f. ± Comparison against base commit b791ad2.

[coveralls]

coverage: 48.723%. remained the same
when pulling c82929f on feat/loglevel-environment-variable
into b791ad2 on main.