fix(pkcs7): fix warning of both public_key/public_key_env_var to refl…

…ect code

If both public_key and public_key_env_var were set, this message
triggred:
`both public_key and public_key_env_var specified, using public_key`

However, the code actually preferred the `public_key_env_var` path.
Change the warning to reflect that.

Also change a similar line for private_key/private_key_env_var.

Signed-off-by: Robin H. Johnson <[email protected]>
Resolves: #360 (comment)

lib/hiera/backend/eyaml/encryptors/pkcs7.rb

@@ -40,7 +40,7 @@ def self.encrypt(plaintext)
             public_key_env_var = option :public_key_env_var
 
             if public_key and public_key_env_var
-              warn 'both public_key and public_key_env_var specified, using public_key'
+              warn 'both public_key and public_key_env_var specified, using public_key_env_var'
             end
 
             if public_key_env_var
@@ -70,10 +70,10 @@ def self.decrypt(ciphertext)
             raise StandardError, 'pkcs7_private_key is not defined' unless private_key or private_key_env_var
 
             if public_key and public_key_env_var
-              warn 'both public_key and public_key_env_var specified, using public_key'
+              warn 'both public_key and public_key_env_var specified, using public_key_env_var'
             end
             if private_key and private_key_env_var
-              warn 'both private_key and private_key_env_var specified, using private_key'
+              warn 'both private_key and private_key_env_var specified, using private_key_env_var'
             end
 
             private_key_pem = if private_key_env_var and ENV[private_key_env_var]