Fix hipclang argument in CI (#171)

[ROCm/rccl commit: 428f1f1555]

projects/rccl/.jenkins/common.groovy

@@ -9,7 +9,7 @@ def runCompileCommand(platform, project, jobName)
     def command = """#!/usr/bin/env bash
                 set -x
                 cd ${project.paths.project_build_prefix}
-                LD_LIBRARY_PATH=/opt/rocm/hcc/lib CXX= ${project.paths.build_command} -t {hipclangArgs}
+                LD_LIBRARY_PATH=/opt/rocm/hcc/lib CXX= ${project.paths.build_command} -t ${hipclangArgs}
             """
 
     platform.runCommand(this,command)