Use upstream certicate chain instead of an hardcoded one.upstream/0.7

This is a breaking change.  The certificate indicated by 'CAfile' is no
longer used as is in 'certificate-chain' (along with the leaf cert).
The chain returned by the ACME v2 endpoint is used instead.  This allows
for more flexbility with respect to key/CA rotation, cf.
https://letsencrypt.org/2020/11/06/own-two-feet.html and
https://community.letsencrypt.org/t/beginning-issuance-from-r3/139018

Moreover 'CAfile' now defaults to @@datadir@@/lacme/ca-certificates.crt
which is a concatenation of all known active CA certificates (which
includes the previous default).

8 files changed, 210 insertions, 0 deletions

diff --git a/certs/lets-encrypt-e1.pem b/certs/lets-encrypt-e1.pem
new file mode 100644
index 0000000..2a19d41
--- /dev/null
+++ b/certs/lets-encrypt-e1.pem
@@ -0,0 +1,17 @@
+-----BEGIN CERTIFICATE-----
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+YJkgsTgDyj2gJrjubi1K9sZmHzOa25JK1fUpE8ZwYii6I4zPPS/Lgul/
+-----END CERTIFICATE-----
diff --git a/certs/lets-encrypt-e2.pem b/certs/lets-encrypt-e2.pem
new file mode 100644
index 0000000..0fd9f40
--- /dev/null
+++ b/certs/lets-encrypt-e2.pem
@@ -0,0 +1,17 @@
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
diff --git a/certs/lets-encrypt-r3-cross-signed.pem b/certs/lets-encrypt-r3-cross-signed.pem
new file mode 100644
index 0000000..1d82449
--- /dev/null
+++ b/certs/lets-encrypt-r3-cross-signed.pem
@@ -0,0 +1,26 @@
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
diff --git a/certs/lets-encrypt-r3.pem b/certs/lets-encrypt-r3.pem
new file mode 100644
index 0000000..43b222a
--- /dev/null
+++ b/certs/lets-encrypt-r3.pem
@@ -0,0 +1,30 @@
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
diff --git a/certs/lets-encrypt-r4-cross-signed.pem b/certs/lets-encrypt-r4-cross-signed.pem
new file mode 100644
index 0000000..f0ed3cd
--- /dev/null
+++ b/certs/lets-encrypt-r4-cross-signed.pem
@@ -0,0 +1,26 @@
+-----BEGIN CERTIFICATE-----
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diff --git a/certs/lets-encrypt-r4.pem b/certs/lets-encrypt-r4.pem
new file mode 100644
index 0000000..578b3bd
--- /dev/null
+++ b/certs/lets-encrypt-r4.pem
@@ -0,0 +1,30 @@
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
diff --git a/certs/letsencryptauthorityx3.pem b/certs/letsencryptauthorityx3.pem
new file mode 100644
index 0000000..4e82cb5
--- /dev/null
+++ b/certs/letsencryptauthorityx3.pem
@@ -0,0 +1,32 @@
+-----BEGIN CERTIFICATE-----
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diff --git a/certs/letsencryptauthorityx4.pem b/certs/letsencryptauthorityx4.pem
new file mode 100644
index 0000000..34064da
--- /dev/null
+++ b/certs/letsencryptauthorityx4.pem
@@ -0,0 +1,32 @@
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----