Replaced exception with the warnings and removed related failing specs

Signed-off-by: sanga17 <[email protected]>

lib/chef/knife/mixin/helper.rb

@@ -59,7 +59,7 @@ def validate_json(json)
             next unless printable?(value.to_s)
 
             msg = "Value '#{value}' of key '#{key}' contains non-printable characters. Check that backslashes are escaped with another backslash (e.g. C:\\\\Windows) in double-quoted strings."
-            raise ChefVault::Exceptions::InvalidValue, msg
+            ChefVault::Log.warn(msg)
           end
         end
       end

spec/chef/helper_spec.rb

@@ -5,18 +5,13 @@
   include ChefVault::Mixin::Helper
 
   let(:json_data) { '{"username": "root", "password": "abcabc"}' }
-  let(:json_data_control_char) { '{"username": "root", "password": "abc\abc"}' }
   let(:buggy_json_data) { '{"username": "root", "password": "abc\abc"' }
 
   describe "#validate_json" do
     it "Raises InvalidValue Exception when invalid data provided" do
       expect { validate_json(buggy_json_data) }.to raise_error(ChefVault::Exceptions::InvalidValue)
     end
 
-    it "Raises InvalidValue Exception when value consist of control characters" do
-      expect { validate_json(json_data_control_char) }.to raise_error(ChefVault::Exceptions::InvalidValue)
-    end
-
     it "Not to raise error if valid data provided" do
       expect { validate_json(json_data) }.to_not raise_error
     end