rune/libenclave/skeleton: Enable --debug option for RA

The --debug option of rune should be enabled to show IAS report when running RA.
Signed-off-by: NYilin Li <YiLin.Li@linux.alibaba.com>

rune/libenclave/internal/runtime/pal/skeleton/skeleton_remote_attestation_with_rune.md

@@ -33,14 +33,14 @@ cd "$HOME/rune_workdir/rune-container"
 # copy /etc/resolv.conf from host to bundles to ensure network is ready for the remote attestation of IAS.
 cp /etc/resolv.conf rootfs/etc/resolv.conf
 
-sudo rune run skeleton-enclave-container
+sudo rune --debug run skeleton-enclave-container
 ```
 
 # Use `rune attest` command with skeleton
 You can type the following command to use `rune attest` command with skeleton in another shell:
 
 ```shell
-rune attest --product=false \
+rune --debug attest --product=false \
 		--linkable=false \
 		--spid=${EPID_SPID} \
 		--subscription-key=${EPID_SUBSCRIPTION_KEY} \