fix(vpnsecure): upgrade Openvpn key encryption if needed (#1471)

internal/openvpn/pkcs8/testdata/readme.txt

@@ -0,0 +1,12 @@
+The key files in this directory are generated using OpenSSL.
+Re-generating them is fine and should work with existing tests.
+
+For DES encrypted RSA key files, openssl version 1.x.x is required, and the following commands in order generate the files:
+
+openssl genpkey -algorithm RSA -pkeyopt rsa_keygen_bits:512 -des -pass pass:password -out rsa_pkcs8_aes128cbc_encrypted.pem
+openssl pkcs8 -topk8 -in rsa_pkcs8_aes128cbc_encrypted.pem -passin pass:password -nocrypt -out rsa_pkcs8_aes128cbc_decrypted.pem
+
+For AES encrypted RSA key files, the following commands in order generate the files:
+
+openssl genpkey -algorithm RSA -pkeyopt rsa_keygen_bits:512 -aes-128-cbc -pass pass:password -out rsa_pkcs8_descbc_encrypted.pem
+openssl pkcs8 -topk8 -in rsa_pkcs8_descbc_encrypted.pem -passin pass:password -nocrypt -out rsa_pkcs8_descbc_decrypted.pem

internal/openvpn/pkcs8/testdata/rsa_pkcs8_aes128cbc_decrypted.pem

@@ -0,0 +1,10 @@
+-----BEGIN PRIVATE KEY-----
+MIIBVgIBADANBgkqhkiG9w0BAQEFAASCAUAwggE8AgEAAkEAsont6TMS9RVqjXoi
+wF/oKZCwbWM4HmCJvp5Z2dOfKabt+7FOTJiD7APLJKva6791HDTuyBu7+HFQCzW3
+ghLuiwIDAQABAkB09FuwHq/1cmEJao+nO2xHBiw8i/lwFMdG4k5znegujL4g16i7
++afWrMd54jYNPGiKuSNObB2BZR1j8tz/jvbxAiEA3d7bVwtWdaZVIV5t9uqrq5fG
+j3eXfNemTu1HQDmVqNMCIQDOALECY98KURR4NJueTKNuvawkuWFhizfKKTfS5B6Q
+aQIhANsF/RFYp+lMYg2m4nc2AnJKSkGmlW0wlYSkyAmmzw7xAiEAqSz+MSVNnU5a
+ziD+D/GGYkKYJYysgYvwZDCXbLT0uMkCIQDZghteTq2MMwIWWUJti3nc6nCICaJu
+d5O9Sm7BcOSuoA==
+-----END PRIVATE KEY-----

internal/openvpn/pkcs8/testdata/rsa_pkcs8_aes128cbc_encrypted.pem

@@ -0,0 +1,12 @@
+-----BEGIN ENCRYPTED PRIVATE KEY-----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+-----END ENCRYPTED PRIVATE KEY-----

internal/openvpn/pkcs8/testdata/rsa_pkcs8_descbc_decrypted.pem

@@ -0,0 +1,10 @@
+-----BEGIN PRIVATE KEY-----
+MIIBVgIBADANBgkqhkiG9w0BAQEFAASCAUAwggE8AgEAAkEAuU3FTtbPm8OjZ/d8
+vVd+seQcrCGgwxigKpOszFfOOXKxfy2CgpjE1Ga2h0UneJ6pq0KZyY+ggYAX8PaS
+U6R3HwIDAQABAkEAibQPkjzz3u8Nua8i1Zn1nsDDxe7fhtv/+mPvn5MIv4sFRS71
+0o9+SPNIQn7aJcGIqyBzHYdQg3/wGla+LA+msQIhAOt+hy1dnaWTSXIrIuPt+sSP
+Fjk80ijfxntXHNU6qExjAiEAyXBurrTdQs6D61ZzdlOFzgUs/FHa4dmWmxXuFsdv
+8RUCIQCIZQJaLiyOp94UOBO/PCjQC6ftguKeNe25plzWy2CKzQIgXBpBMTZXGG2u
+WZMcldSYkFtDd1bB2pQPTXeYdefYYgUCIQDVH3ysySFXIlHJulgcxvriXTfY4goY
+TQ0PL0Ow7sIz6A==
+-----END PRIVATE KEY-----

internal/openvpn/pkcs8/testdata/rsa_pkcs8_descbc_encrypted.pem

@@ -0,0 +1,12 @@
+-----BEGIN ENCRYPTED PRIVATE KEY-----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+-----END ENCRYPTED PRIVATE KEY-----