Fix compatibility with simgrid 3.11

tools/perfmodels/sampling/bus/attila.platform.xml

@@ -44,7 +44,7 @@
 
    <host id="RAM" power="1"/>
 
-   <host id="DISK0" speed="1f"/>
+   <host id="DISK0" power="1"/>
 
    <link id="Host" bandwidth="6526732233.112210" latency="0.000000"/>
 

tools/perfmodels/sampling/bus/idgraf.platform.xml

@@ -55,7 +55,7 @@
 
    <host id="RAM" power="1"/>
 
-   <host id="DISK0" speed="1f"/>
+   <host id="DISK0" power="1"/>
 
    <link id="Host" bandwidth="6520981045.053596" latency="0.000000"/>
 

tools/perfmodels/sampling/bus/mirage.platform.xml

@@ -44,7 +44,7 @@
 
    <host id="RAM" power="1"/>
 
-   <host id="DISK0" speed="1f"/>
+   <host id="DISK0" power="1"/>
 
    <link id="Host" bandwidth="6517450307.894589" latency="0.000000"/>
 

tools/perfmodels/sampling/bus/sirocco.platform.xml

@@ -63,7 +63,7 @@
 
    <host id="RAM" power="1"/>
 
-   <host id="DISK0" speed="1f"/>
+   <host id="DISK0" power="1"/>
 
    <link id="Host" bandwidth="10521832623.517040" latency="0.000000"/>