Adjusting MCP header processing to llama stack 0.4.x and adding MCP e2e tests#1141

blublinsky wants to merge 1 commit intolightspeed-core:mainlightspeed-core/lightspeed-stack:mainfrom

blublinsky:mcp-e2e-simpleblublinsky/lightspeed-stack:mcp-e2e-simpleCopy head branch name to clipboard