cephadm: clean-up error message

use the standard error message from FileNotFound:
```
cephadm bootstrap --mon-ip 192.168.1.1 --config ~/foobar
ERROR: [Errno 2] No such file or directory: '/root/foobar'
```

Signed-off-by: Michael Fritch <mfritch@suse.com>

diff --git a/src/cephadm/cephadm b/src/cephadm/cephadm
index df1b04f64537990f608fdfc1f715c62cdf10509c..0d9c957ab1d475f186eaf4ee80b95ba492f0195f 100755 (executable)
--- a/src/cephadm/cephadm
+++ b/src/cephadm/cephadm
@@ -2267,8 +2267,8 @@ def get_config_and_keyring(ctx):
         try:
             with open(ctx.config, 'r') as f:
                 config = f.read()
-        except FileNotFoundError:
-            raise Error('config file: %s does not exist' % ctx.config)
+        except FileNotFoundError as e:
+            raise Error(e)
 
     if 'key' in ctx and ctx.key:
         keyring = '[%s]\n\tkey = %s\n' % (ctx.name, ctx.key)
@@ -2276,8 +2276,8 @@ def get_config_and_keyring(ctx):
         try:
             with open(ctx.keyring, 'r') as f:
                 keyring = f.read()
-        except FileNotFoundError:
-            raise Error('keyring file: %s does not exist' % ctx.keyring)
+        except FileNotFoundError as e:
+            raise Error(e)
 
     return config, keyring