meta-signing-key: add the sample keys for modsign and extra system trusted key

Signed-off-by: Jia Zhang <qianyue.zj@alibaba-inc.com>

meta-signing-key/files/extra_system_trusted_keys/extra_system_trusted_key.crt

@@ -0,0 +1,19 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----

meta-signing-key/files/extra_system_trusted_keys/extra_system_trusted_key.key

@@ -0,0 +1,28 @@
+-----BEGIN PRIVATE KEY-----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+-----END PRIVATE KEY-----

meta-signing-key/files/modsign_keys/modsign_key.crt

@@ -0,0 +1,19 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----

meta-signing-key/files/modsign_keys/modsign_key.key

@@ -0,0 +1,28 @@
+-----BEGIN PRIVATE KEY-----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+-----END PRIVATE KEY-----