Improve download error message that is shown when downloading or verifying the binary failed

Signed-off-by: DL6ER <dl6er@dl6er.de>

automated install/basic-install.sh

@@ -2099,7 +2099,7 @@ FTLinstall() {
             # the download failed, so just go back to the original directory
             popd > /dev/null || { echo "Unable to return to original directory after FTL binary download."; return 1; }
             echo -e "${OVER}  ${CROSS} ${str}"
-            echo -e "  ${COL_LIGHT_RED}Error: Download of binary from Github failed${COL_NC}"
+            echo -e "  ${COL_LIGHT_RED}Error: Download of ${url}/${binary} failed (checksum error)${COL_NC}"
             return 1
         fi
     # Otherwise,
@@ -2107,7 +2107,7 @@ FTLinstall() {
         popd > /dev/null || { echo "Unable to return to original directory after FTL binary download."; return 1; }
         echo -e "${OVER}  ${CROSS} ${str}"
         # The URL could not be found
-        echo -e "  ${COL_LIGHT_RED}Error: URL not found${COL_NC}"
+        echo -e "  ${COL_LIGHT_RED}Error: URL ${url}/${binary} not found${COL_NC}"
         return 1
     fi
 }

test/test_automated_install.py

@@ -501,8 +501,10 @@ def test_FTL_download_unknown_fails_no_errors(Pihole):
     ''')
     expected_stdout = cross_box + ' Downloading and Installing FTL'
     assert expected_stdout in download_binary.stdout
-    error = 'Error: URL not found'
+    error1 = 'Error: URL https://github.com/pi-hole/FTL/releases/download/'
-    assert error in download_binary.stdout
+    assert error1 in download_binary.stdout
+    error2 = 'not found'
+    assert error2 in download_binary.stdout
 
 
 def test_FTL_binary_installed_and_responsive_no_errors(Pihole):