tests/plan: add PubkeyAcceptedAlgorithms=+ssh-rsa to ssh-option

To workaround the issue that failed to ssh after reboot, can not
reproduce locally.

Signed-off-by: Huijing Hei <[email protected]>

Author: HuijingHei

tmt/plans/tests-install.fmf

@@ -14,6 +14,8 @@ provision:
   user: root
   memory: 4096
   disk: 20
+  ssh-option:
+    - "PubkeyAcceptedAlgorithms=+ssh-rsa"
 
 /plan-bootc-install-on-coreos:
   summary: Execute bootc install on ostree OS