clang-format: Update to match docs repo

Update the .clang-format file and run clang-format-6.0.
This .clang-format matches the example one in
https://github.com/openbmc/docs/blob/master/cpp-style-and-conventions.md#clang-formatting

Change-Id: Ia331c9a5b040e1a3c45a0ebf1b8d776d93b05ae5
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>
diff --git a/dns_updater.hpp b/dns_updater.hpp
index 84646c6..32cbb1b 100644
--- a/dns_updater.hpp
+++ b/dns_updater.hpp
@@ -20,8 +20,7 @@
  *  @param[in] inFile  - File having DNS entries supplied by DHCP
  *  @param[in] outFile - File to write the nameserver entries to
  */
-void updateDNSEntries(const fs::path& inFile,
-                      const fs::path& outFile);
+void updateDNSEntries(const fs::path& inFile, const fs::path& outFile);
 
 /** @brief User callback handler invoked by inotify watcher
  *
@@ -35,7 +34,7 @@
     return updateDNSEntries(inFile, RESOLV_CONF);
 }
 
-} // namepsace updater
-} // namepsace dns
+} // namespace updater
+} // namespace dns
 } // namespace network
 } // namespace phosphor