fix: Catch the issues with service unavailable other than the Connect Timeout#4590

balhar-jakub wants to merge 4 commits intov3.x.xzowe/api-layer:v3.x.xfrom

fix/3878-gateway-returns-500-instead-of-503zowe/api-layer:fix/3878-gateway-returns-500-instead-of-503Copy head branch name to clipboard