frr: T3227: import hotfix for frr-reload script to fix rpki issues

(cherry picked from commit c6728db700820fe931c839e629cf92a278517be5)

packages/frr/patches/0001-frr-reload-rpki-context-exiting-uses-exit-and-not-en.patch

@@ -0,0 +1,41 @@
+From 258409cfa05aaa378e4f120dc67fb226465fa829 Mon Sep 17 00:00:00 2001
+From: Runar Borge <runar@borge.nu>
+Date: Sat, 23 Jan 2021 00:15:41 +0100
+Subject: [PATCH] frr-reload: rpki context exiting uses exit and not end
+
+Issue:
+The rpki subcontext uses exit instead of end to exit.
+This makes issues with frr-reload in the way that frr-reload never exits
+rpki context until it reaches the next end statement. this also happens when
+parsing the configuration from vtysh.
+
+Signed-off-by: Runar Borge <runar@borge.nu>
+---
+ tools/frr-reload.py | 11 +++++++++++
+ 1 file changed, 11 insertions(+)
+
+diff --git a/tools/frr-reload.py b/tools/frr-reload.py
+index 412cde091..33c4ef5e5 100755
+--- a/tools/frr-reload.py
++++ b/tools/frr-reload.py
+@@ -452,6 +452,17 @@ end
+                 ctx_keys = []
+                 current_context_lines = []
+ 
++            elif (line == "exit" and
++                  ctx_keys[0].startswith('rpki')):
++                self.save_contexts(ctx_keys, current_context_lines)
++                log.debug('LINE %-50s: exiting old context, %-50s', line, ctx_keys)
++
++                # Start a new context
++                new_ctx = True
++                main_ctx_key = []
++                ctx_keys = []
++                current_context_lines = []
++
+             elif line == "exit-vrf":
+                 self.save_contexts(ctx_keys, current_context_lines)
+                 current_context_lines.append(line)
+-- 
+2.20.1
+