feat(google-auth-httplib2): Update constraints-3.10.txt with minimum versions

Author: chalmerlowe

packages/google-auth-httplib2/testing/constraints-3.10.txt

@@ -0,0 +1,9 @@
+# This constraints file is used to check that lower bounds
+# are correct in setup.py
+# List *all* library dependencies and extras in this file.
+# Pin the version to the lower bound.
+#
+# e.g., if setup.py has "foo >= 1.14.0, < 2.0.0dev",
+# Then this file should have foo==1.14.0
+google-auth==1.32.0
+httplib2==0.19.0