centralised password entry field in lockscreen

After width of password entry field was changed from
matchParent to 276dp in ag/26055623, platform scenario tests started
failing due to non-centered password entry field. This CL fixes that by
setting layout_gravity for password entry field to center

Fixes: 325656312
Test: atest PlatformScenarioTests:android.platform.test.scenario.sysui.lockscreen.PasswordBouncerSmallScreen#password_landFlagOff_portraitSmall_verticalLayout
Flag: NA
Change-Id: Ieb031a478d3eba594b906acd5129d3b2f0cc824c
diff --git a/packages/SystemUI/res-keyguard/layout/keyguard_password_motion_layout.xml b/packages/SystemUI/res-keyguard/layout/keyguard_password_motion_layout.xml
index 173d57b..3b6b5a0 100644
--- a/packages/SystemUI/res-keyguard/layout/keyguard_password_motion_layout.xml
+++ b/packages/SystemUI/res-keyguard/layout/keyguard_password_motion_layout.xml
@@ -91,6 +91,7 @@
                 android:layout_height="wrap_content"
                 android:contentDescription="@string/keyguard_accessibility_password"
                 android:gravity="center_horizontal"
+                android:layout_gravity="center"
                 android:imeOptions="flagForceAscii|actionDone"
                 android:inputType="textPassword"
                 android:maxLength="500"
diff --git a/packages/SystemUI/res-keyguard/layout/keyguard_password_view.xml b/packages/SystemUI/res-keyguard/layout/keyguard_password_view.xml
index 909d4fc..5aac653 100644
--- a/packages/SystemUI/res-keyguard/layout/keyguard_password_view.xml
+++ b/packages/SystemUI/res-keyguard/layout/keyguard_password_view.xml
@@ -55,6 +55,7 @@
              android:layout_height="wrap_content"
              android:contentDescription="@string/keyguard_accessibility_password"
              android:gravity="center"
+             android:layout_gravity="center"
              android:singleLine="true"
              android:textStyle="normal"
              android:inputType="textPassword"