pylintrc: enable (most) python3 checks

The python3 checks are all disabled by default, so we have to turn
them all on manually.

Bug: 28298984
Test: running pylint on repohooks shows no new warnings
Change-Id: Ic5dbe4028be8536d603334e17bdc0e844434ed49
diff --git a/tools/pylintrc b/tools/pylintrc
index 36731c4..f1ea6b2 100644
--- a/tools/pylintrc
+++ b/tools/pylintrc
@@ -72,7 +72,67 @@
 # Enable the message, report, category or checker with the given id(s). You can
 # either give multiple identifier separated by comma (,) or put this option
 # multiple time. See also the "--disable" option for examples.
-#enable=
+enable=
+    apply-builtin,
+    backtick,
+    bad-python3-import,
+    basestring-builtin,
+    buffer-builtin,
+    cmp-builtin,
+    cmp-method,
+    coerce-builtin,
+    coerce-method,
+    delslice-method,
+    deprecated-itertools-function,
+    deprecated-str-translate-call,
+    deprecated-string-function,
+    deprecated-types-field,
+    dict-items-not-iterating,
+    dict-iter-method,
+    dict-keys-not-iterating,
+    dict-values-not-iterating,
+    dict-view-method,
+    div-method,
+    exception-message-attribute,
+    execfile-builtin,
+    file-builtin,
+    filter-builtin-not-iterating,
+    getslice-method,
+    hex-method,
+    idiv-method,
+    import-star-module-level,
+    indexing-exception,
+    input-builtin,
+    intern-builtin,
+    invalid-str-codec,
+    long-builtin,
+    map-builtin-not-iterating,
+    metaclass-assignment,
+    next-method-called,
+    next-method-defined,
+    nonzero-method,
+    oct-method,
+    old-division,
+    old-raise-syntax,
+    parameter-unpacking,
+    print-statement,
+    raising-string,
+    range-builtin-not-iterating,
+    raw_input-builtin,
+    rdiv-method,
+    reduce-builtin,
+    reload-builtin,
+    round-builtin,
+    setslice-method,
+    standarderror-builtin,
+    sys-max-int,
+    unichr-builtin,
+    unicode-builtin,
+    unpacking-in-except,
+    using-cmp-argument,
+    xrange-builtin,
+    zip-builtin-not-iterating,
+
 
 # Disable the message, report, category or checker with the given id(s). You
 # can either give multiple identifiers separated by comma (,) or put this