feat(cli): allow specifying name of provisioner daemon (#11077)

- Adds a --name argument to provisionerd start
- Plumbs through name to integrated and external provisioners
- Defaults to hostname if not specified for external, hostname-N for integrated
- Adds cliutil.Hostname

scripts/coder-dev.sh

@@ -20,6 +20,9 @@ fi
 if [[ ${1:-} == exp ]] && [[ ${2:-} == scaletest ]]; then
 	BINARY_TYPE=coder
 fi
+if [[ ${1:-} == provisionerd ]]; then
+	BINARY_TYPE=coder
+fi
 RELATIVE_BINARY_PATH="build/${BINARY_TYPE}_${GOOS}_${GOARCH}"
 
 # To preserve the CWD when running the binary, we need to use pushd and popd to