Move grpc to ROCm install dir

Having grpc installed outside of ROCm dir is problematic
for multiple, simultaneous ROCm installations.

Change-Id: I5ad458ad01a76786339607d708b48534f15b137b


[ROCm/rdc commit: 0030f27ff8]

projects/rdc/src/DEBIAN_postinst.in

@@ -1,7 +1,7 @@
 #/bin/bash
 
 RDC_LIB_DIR=@RDC_CLIENT_ROOT_PATH@/rdc/lib
-GRPC_LIB_DIR=/usr/grpc/lib
+GRPC_LIB_DIR=@RDC_CLIENT_ROOT_PATH@/grpc/lib
 
 # This will return 0 if an id is created and non-zero if
 # it already exists

projects/rdc/src/RPM_rpm_post.in

@@ -1,7 +1,7 @@
 #!/bin/bash
 
 RDC_LIB_DIR=@RDC_CLIENT_ROOT_PATH@/rdc/lib
-GRPC_LIB_DIR=/usr/grpc/lib
+GRPC_LIB_DIR=@RDC_CLIENT_ROOT_PATH@/grpc/lib
 
 do_create_rdc_user() {
     useradd -r -s /bin/nologin rdc