Update img-allowed-roles.html

adds meter role

tests/img-allowed-roles.html

@@ -71,6 +71,7 @@ <h3>Test 1</h3>
 					<p><img src=# alt=button role=button tabindex=0></p>
 					<p><img src=# alt=checkbox role=checkbox aria-checked=false tabindex=0></p>
 					<p><img src=# alt=link role=link tabindex=0></p>
+					<p><img src=# alt=meter role=meter aria-valuenow=0></p>
 					<p role=menu><img src=# alt=menuitem role=menuitem tabindex=0></p>
 					<p role=menu><img src=# alt=menuitemcheckbox role=menuitemcheckbox aria-checked=false tabindex=0></p>
 					<p role=menu><img src=# alt=menuitemradio role=menuitemradio tabindex=0 aria-checked=false></p>
@@ -90,6 +91,7 @@ <h3>Test 1</h3>
 					<p><img src=# title=button role=button tabindex=0></p>
 					<p><img src=# title=checkbox role=checkbox aria-checked=false tabindex=0></p>
 					<p><img src=# title=link role=link tabindex=0></p>
+					<p><img src=# title=meter role=meter aria-valuenow=0></p>
 					<p role=menu><img src=# title=menuitem role=menuitem tabindex=0></p>
 					<p role=menu><img src=# title=menuitemcheckbox role=menuitemcheckbox aria-checked=false tabindex=0></p>
 					<p role=menu><img src=# title=menuitemradio role=menuitemradio tabindex=0 aria-checked=false></p>
@@ -109,6 +111,7 @@ <h3>Test 1</h3>
 					<p><img src=# aria-label=button role=button tabindex=0></p>
 					<p><img src=# aria-label=checkbox role=checkbox aria-checked=false tabindex=0></p>
 					<p><img src=# aria-label=link role=link tabindex=0></p>
+					<p><img src=# aria-label=meter role=meter aria-valuenow=0></p>
 					<p role=menu><img src=# aria-label=menuitem role=menuitem tabindex=0></p>
 					<p role=menu><img src=# aria-label=menuitemcheckbox role=menuitemcheckbox aria-checked=false tabindex=0></p>
 					<p role=menu><img src=# aria-label=menuitemradio role=menuitemradio tabindex=0 aria-checked=false></p>
@@ -128,6 +131,7 @@ <h3>Test 1</h3>
 					<p><img src=# aria-labelledby=al role=button tabindex=0></p>
 					<p><img src=# aria-labelledby=al role=checkbox aria-checked=false tabindex=0></p>
 					<p><img src=# aria-labelledby=al role=link tabindex=0></p>
+					<p><img src=# aria-labelledby=al role=meter aria-valuenow=0></p>
 					<p role=menu><img src=# aria-labelledby=al role=menuitem tabindex=0></p>
 					<p role=menu><img src=# aria-labelledby=al role=menuitemcheckbox aria-checked=false tabindex=0></p>
 					<p role=menu><img src=# aria-labelledby=al role=menuitemradio tabindex=0 aria-checked=false></p>