Spelling errors fixed

Change-Id: I7d2eec61cb4f02819dd42900146739acd9c65cc4

CONTRIBUTING.rst

@@ -51,7 +51,7 @@ The Trove project encourages the guidelines (below).
      * You have a question, or need a clarification from the author,
      * The proposed change is functional but you believe that there is
        a different, better, or more appropriate way in which to
-       acheive the end result being sought by the proposed change,
+       achieve the end result being sought by the proposed change,
      * There is an issue of some kind with the Commit Message,
        including violations of the Commit Message guidelines,
      * There is a typographical or formatting error in the commit

trove/guestagent/datastore/redis/service.py

@@ -76,7 +76,7 @@ class RedisAppStatus(service.BaseDbStatus):
         running ps.
         We attempt to locate the PID file and see if the process
         is crashed or shutdown.
-        Remeber by default execute_with_timeout raises this exception
+        Remember by default execute_with_timeout raises this exception
         if a non 0 status code is returned from the cmd called.
         """
         options = _load_redis_options()

trove/guestagent/strategies/restore/mysql_impl.py

@@ -213,7 +213,7 @@ class InnoBackupExIncremental(InnoBackupEx):
             self._incremental_restore(parent_location, parent_checksum)
             # for *this* backup set the incremental_dir
             # just use the checksum for the incremental path as it is
-            # sufficently unique /var/lib/mysql/<checksum>
+            # sufficiently unique /var/lib/mysql/<checksum>
             incremental_dir = os.path.join(self.restore_location, checksum)
             utils.execute("mkdir", "-p", incremental_dir,
                           root_helper="sudo",