Fix import of private key with older gnutls

With older GNUTLS the gnutls_x509_privkey_import function is
unable to import our private key. Instead we must use the
alternative gnutls_x509_privkey_import_pkcs8() (as certtool
does).

* virnettlscontexttest.c: Fix import of private key with
  older gnutls. Also add missing newlines to key

tests/virnettlscontexttest.c

@@ -59,21 +59,21 @@ extern const ASN1_ARRAY_TYPE pkix_asn1_tab[];
 gnutls_x509_privkey_t privkey;
 # define PRIVATE_KEY                                              \
     "-----BEGIN PRIVATE KEY-----\n"                               \
-    "MIICdQIBADANBgkqhkiG9w0BAQEFAASCAl8wggJbAgEAAoGBALVcr"     \
-    "BL40Tm6yq88FBhJNw1aaoCjmtg0l4dWQZ/e9Fimx4ARxFpT+ji4FE"     \
-    "Cgl9s/SGqC+1nvlkm9ViSo0j7MKDbnDB+VRHDvMAzQhA2X7e8M0n9"     \
-    "rPolUY2lIVC83q0BBaOBkCj2RSmT2xTEbbC2xLukSrg2WP/ihVOxc"     \
-    "kXRuyFtzAgMBAAECgYB7slBexDwXrtItAMIH6m/U+LUpNe0Xx48OL"     \
-    "IOn4a4whNgO/o84uIwygUK27ZGFZT0kAGAk8CdF9hA6ArcbQ62s1H"     \
-    "myxrUbF9/mrLsQw1NEqpuUk9Ay2Tx5U/wPx35S3W/X2AvR/ZpTnCn"     \
-    "2q/7ym9fyiSoj86drD7BTvmKXlOnOwQJBAPOFMp4mMa9NGpGuEssO"     \
-    "m3Uwbp6lhcP0cA9MK+iOmeANpoKWfBdk5O34VbmeXnGYWEkrnX+9J"     \
-    "bM4wVhnnBWtgBMCQQC+qAEmvwcfhauERKYznMVUVksyeuhxhCe7EK"     \
-    "mPh+U2+g0WwdKvGDgO0PPt1gq0ILEjspMDeMHVdTwkaVBo/uMhAkA"     \
-    "Z5SsZyCP2aTOPFDypXRdI4eqRcjaEPOUBq27r3uYb/jeboVb2weLa"     \
-    "L1MmVuHiIHoa5clswPdWVI2y0em2IGoDAkBPSp/v9VKJEZabk9Frd"     \
-    "a+7u4fanrM9QrEjY3KhduslSilXZZSxrWjjAJPyPiqFb3M8XXA26W"     \
-    "nz1KYGnqYKhLcBAkB7dt57n9xfrhDpuyVEv+Uv1D3VVAhZlsaZ5Pp"     \
+    "MIICdQIBADANBgkqhkiG9w0BAQEFAASCAl8wggJbAgEAAoGBALVcr\n"     \
+    "BL40Tm6yq88FBhJNw1aaoCjmtg0l4dWQZ/e9Fimx4ARxFpT+ji4FE\n"     \
+    "Cgl9s/SGqC+1nvlkm9ViSo0j7MKDbnDB+VRHDvMAzQhA2X7e8M0n9\n"     \
+    "rPolUY2lIVC83q0BBaOBkCj2RSmT2xTEbbC2xLukSrg2WP/ihVOxc\n"     \
+    "kXRuyFtzAgMBAAECgYB7slBexDwXrtItAMIH6m/U+LUpNe0Xx48OL\n"     \
+    "IOn4a4whNgO/o84uIwygUK27ZGFZT0kAGAk8CdF9hA6ArcbQ62s1H\n"     \
+    "myxrUbF9/mrLsQw1NEqpuUk9Ay2Tx5U/wPx35S3W/X2AvR/ZpTnCn\n"     \
+    "2q/7ym9fyiSoj86drD7BTvmKXlOnOwQJBAPOFMp4mMa9NGpGuEssO\n"     \
+    "m3Uwbp6lhcP0cA9MK+iOmeANpoKWfBdk5O34VbmeXnGYWEkrnX+9J\n"     \
+    "bM4wVhnnBWtgBMCQQC+qAEmvwcfhauERKYznMVUVksyeuhxhCe7EK\n"     \
+    "mPh+U2+g0WwdKvGDgO0PPt1gq0ILEjspMDeMHVdTwkaVBo/uMhAkA\n"     \
+    "Z5SsZyCP2aTOPFDypXRdI4eqRcjaEPOUBq27r3uYb/jeboVb2weLa\n"     \
+    "L1MmVuHiIHoa5clswPdWVI2y0em2IGoDAkBPSp/v9VKJEZabk9Frd\n"     \
+    "a+7u4fanrM9QrEjY3KhduslSilXZZSxrWjjAJPyPiqFb3M8XXA26W\n"     \
+    "nz1KYGnqYKhLcBAkB7dt57n9xfrhDpuyVEv+Uv1D3VVAhZlsaZ5Pp\n"     \
     "dcrhrkJn2sa/+O8OKvdrPSeeu/N5WwYhJf61+CPoenMp7IFci\n"         \
     "-----END PRIVATE KEY-----\n"
 
@@ -419,10 +419,17 @@ static gnutls_x509_privkey_t testTLSLoadKey(void)
 
     if ((err = gnutls_x509_privkey_import(key, &data,
                                           GNUTLS_X509_FMT_PEM)) < 0) {
-        VIR_WARN("Failed to init key %s", gnutls_strerror(err));
+        if (err != GNUTLS_E_BASE64_UNEXPECTED_HEADER_ERROR) {
+            VIR_WARN("Failed to import key %s", gnutls_strerror(err));
             abort();
         }
 
+        if ((err = gnutls_x509_privkey_import_pkcs8(key, &data, GNUTLS_X509_FMT_PEM, NULL, 0)) < 0) {
+            VIR_WARN("Failed to import PKCS8 key %s", gnutls_strerror(err));
+            abort();
+        }
+    }
+
     return key;
 }